The 10 Essentials at a Glance
The Ten Essentials are ten systems designed to keep a change in weather, a wrong turn, a minor injury or an unexpectedly long day from becoming a bigger problem. What you carry within each system changes with the trail, season and conditions.
Navigation + Safety
Know where you're going and have a plan when something changes. Navigation, illumination, first aid, fire, repair tools and emergency shelter provide the basic safety margin for an unexpected delay or problem on the trail.
Water + Fuel
Hydration and nutrition should match the hours, exertion and environment ahead, with enough extra to handle a longer day than planned. A 3-liter reservoir gives most hikers useful capacity as their hikes become longer or conditions get hotter.
Sun + Insulation
Sun protection and insulation prepare you for the environment rather than the temperature at the trailhead. Elevation, exposure, wind, shade, weather and sunset can change what you need considerably over the course of a hike.
Footwear + Pack
Good footwear and a properly fitted 24–34L hiking pack aren't part of the official Ten Essentials, but they form the system that makes everything else work. Prioritize fit, traction, a padded hip belt, room for a 3-liter reservoir and enough capacity for food, layers and safety gear.
There is usually a moment when an extra layer, a headlamp or the last liter of water suddenly stops feeling like something you carried all day for no reason.
Maybe the hike took longer than expected. Clouds moved over the ridge and the temperature dropped. Someone developed a blister three miles from the trailhead. The descent was slower than the climb, sunset arrived while you were still a mile out, or the water source marked on the map wasn’t flowing when you reached it.
None of these is particularly dramatic. They are simply part of spending time outdoors.
That is really what good hiking gear is for. It isn’t about having the newest equipment, buying a pack full of gadgets or preparing for every catastrophe you can imagine. It is about having enough capability in your pack that ordinary changes in the day remain ordinary.
For decades, hikers and mountaineers have organized that idea around the Ten Essentials. Today’s list is better understood as ten systems rather than ten specific objects: navigation, sun protection, insulation, illumination, first aid, fire, repair, nutrition, hydration and emergency shelter. What you carry within each system changes with the trail, weather, season and remoteness.
Before we get into those ten, there are two pieces of gear that make everything else work: what is on your feet and what is on your back.
Start With Your Feet
A day on the trail begins from the ground up. Shoes that feel perfectly fine walking around town can become a very different experience after several hours of climbing, descending, stepping across rocks and moving over loose ground.
There isn’t one correct kind of hiking footwear. A light trail shoe may be perfect for a shorter hike on maintained terrain, while rougher trails, heavier loads, snow, wet conditions or long mountain days may push you toward a more protective hiking shoe or boot. Fit, traction and suitability for the terrain matter more than the logo on the side.
This is also one piece of gear that deserves time before a big hike. Different brands and models use different shapes, widths and heel cups, and your feet usually expand somewhat after hours of walking. Try footwear carefully, wear it on shorter outings first and figure out where it rubs before you are six miles from the trailhead.
Downhill is often where those decisions become noticeable. Descents push the foot forward in the shoe, ask more of your traction and expose fit problems that weren’t obvious on the climb. A shoe that stays secure through the heel and gives the toes enough room can make the last few miles feel very different.
The Pack Has to Carry the Load
A hiking daypack isn’t a book bag with water in it. Once you add two or three liters of water, lunch, extra layers and the Ten Essentials, there is enough weight and bulk inside the pack that how it carries becomes important.
For someone buying one pack for general day hiking, we like something in the 24–34 liter range with room for a 3-liter hydration reservoir. That may sound large for a short hike, but capacity doesn’t mean you have to fill it. Compression straps can pull a partially loaded pack closer to the body, while the extra space becomes invaluable when you need a puffy jacket, rain shell, winter layers, more food or additional equipment for a longer day. Clothing weighs very little compared with water, but it can consume a surprising amount of space.
One feature we would not compromise on is a real, padded hip belt. A properly fitted hiking pack is designed to transfer much of its load through the pelvis rather than hanging everything from the shoulders. That takes strain off the shoulders and upper back, but the benefit isn’t limited to comfort. Securing the pack around your hips also keeps the load connected to your body when you step across a stream, scramble over rocks or move through terrain where you don’t want the pack shifting independently behind you.
From there, pack design becomes much more personal.
Some hikers like a ventilated suspension system that holds the pack slightly away from the back and allows more air to circulate. Others prefer the load sitting closer to the body, particularly when moving through rougher terrain where a compact, body-hugging pack can feel more stable. Neither approach is universally better. Try both and pay attention to how the pack moves when you bend, twist, step up and lean forward—not simply how comfortable it feels standing upright in a store.
Pocket layout is another preference that becomes obvious with experience. Some people want quick access to snacks, sunscreen, a layer or small items without opening the main compartment. Others are perfectly happy with a simpler top-loading design. External attachment points for trekking poles are particularly useful because poles aren’t necessarily in your hands for the entire hike, and being able to secure them quickly keeps them available without putting them inside the pack.
Torso length and overall fit matter as much as any of these features. Packs designed around different body shapes, along with adjustable torso systems, give you options for getting the shoulder harness and hip belt into the right relationship with your body. Once fitted, the hip belt should sit around the upper hip bones and carry the load while the shoulder straps keep the pack close and stable rather than suspending all of its weight from your shoulders.
If you eventually own four or five hiking packs, you can have a small one for short summer hikes, another for winter and another for long mountain days. Most people aren’t going to do that.
Your first good daypack should be able to grow with the places you want to hike.
Think in Systems, Not in Gadgets
The Ten Essentials originated in the mountaineering community, but the idea is just as useful on an ordinary day hike. The goal isn’t to carry expedition equipment everywhere you go. It is to make sure ten basic needs have been considered before you leave.
A short coastal hike near Los Angeles, a hot desert trail in Joshua Tree and an alpine route above 10,000 feet shouldn’t produce identical packs. The systems stay the same; what you put in them changes.
That distinction makes the list much more useful. Instead of asking, “Do I own the Ten Essentials?” ask a better question: What do these ten systems need to look like for this trail today?
1. Navigation
Navigation starts before the hike, not at the first confusing junction. Look at the route, understand roughly where it climbs and turns, notice major junctions and landmarks, and have some idea what surrounds the trail if you make a wrong turn. Trail guides and summaries are very useful to familiarize yourself with the route and what to expect.
A phone with an offline map has become an excellent navigation tool, and on many day hikes it will be what you use most. Download the route before leaving cell service and carry enough battery backup to keep the device useful. On longer, more remote or consequential routes, a topographic map and compass provide a backup that doesn’t depend on a screen, cellular coverage or a functioning battery.
Satellite communicators have also changed what is possible in remote country. They can provide off-grid communication and, depending on the device and service, emergency SOS capability. They are particularly valuable in emergency situations, but they are an addition to navigation rather than a substitute for knowing where you are going.
The trail itself should never be completely unfamiliar just because the phone hasn’t lost its bars yet.
2. Sun Protection + 3. Insulation
Sun and temperature are slow-moving parts of a hiking day, which is one reason they are easy to underestimate. The morning parking lot can be cool and shaded while the same trail several hours later crosses an exposed ridge under direct afternoon sun.
Sun protection starts with sunscreen, sunglasses and a hat, but clothing can do much of the work as well. Lightweight long sleeves, sun hoodies and other high-coverage hiking clothing can reduce the amount of skin that needs repeated sunscreen application. Higher elevation, snow, water and broad exposed terrain can all increase the amount of sun exposure you experience.
Insulation answers a different question: what happens when you stop moving or the weather changes? A warm layer belongs in the pack based on where you are going, not simply on how warm you feel at the trailhead. Elevation, wind, shade, approaching weather and sunset can change comfort very quickly, particularly in dry mountain environments.
This is why experienced hikers think in layers rather than one hiking outfit. A breathable layer manages the hours when you are generating heat; another provides warmth when you aren’t; wind or rain protection may form the outer boundary when the environment demands it like on a summit where it is much cooler than the trailhead, usually windy and you are usually sweaty from the ascent.
The farther the route travels from an easy exit, the more important that margin becomes.
4. Illumination
A headlamp is one of the smallest pieces of equipment in a pack and one of the easiest to appreciate when a day doesn’t follow the schedule.
A hike that should finish at 4:30 can become a hike that finishes at 6:30 because someone is tired, a creek crossing takes longer than expected, the group stops to help another hiker or you simply spend more time somewhere beautiful than you planned. None of those situations needs to become an emergency because the sun went down.
Carry a headlamp rather than relying on the light from your phone. It leaves both hands free, preserves the phone battery for navigation or communication and makes moving over uneven terrain after dark considerably easier. Check the batteries or charge before you leave; for longer outings, make sure you have enough reserve power for the trip.
There is an enormous difference between hiking the final mile in the dark and hiking the final mile in the dark without a light.
5. First Aid + 6. Fire + 7. Repair
Most first-aid situations on a day hike are ordinary: a blister, scrape, minor cut, rolled ankle or the early signs of a hot spot that will become a blister if you ignore it. Your kit should match the size of your group and where you are going, but it is worth carrying supplies you actually know how to use.
A compact outdoor first-aid kit makes a good starting point. We also like having sports or athletic tape available because it can solve several trail problems beyond conventional wound care. Any medications that are essential to you belong in the system as well. If you plan to spend a lot of time in remote areas consider taking a wilderness first aid course which offers training in more advanced skills for common trail injuries and will teach you how to use everything in a wilderness first aid kit. For those taking others out for group adventures a Wilderness First Responder certification is the standard and required on public lands.
Fire is the sixth Essential, but what that means depends greatly on location and current regulations. The purpose is the ability to create emergency heat where fire is both appropriate and legal, not permission to build a campfire wherever you happen to stop. A reliable ignition source belongs in an emergency system, while land-management restrictions and extreme fire conditions always take priority.
The seventh system is repair and tools. A small knife or multitool, a little duct tape, a few zip ties and some cord can repair an impressive number of problems without turning your pack into a toolbox. On longer backcountry trips, that kit expands with the equipment you depend upon: filter parts, stove repair items, needle and thread or other trip-specific materials.
Repair what could realistically break on your trip. That’s a more useful rule than carrying something simply because it appears on somebody else’s gear list. You should also be familiar with how to disassemble, repair and reassemble everything that is in your backpack before you hit the trail. Two days into a multi-day trek is not when you want to figure out how to take your stove apart for the first time.
8. Nutrition + 9. Hydration
Food and water should be planned around time, exertion and environment, not mileage alone. Eight miles through a cool forest is very different from eight miles climbing through exposed desert or gaining several thousand feet at altitude.
For hydration, about half a liter per hour is a useful starting point for moderate hiking in moderate conditions, then adjust for heat, sun, altitude, pace and your own body. The difference can be substantial. During extreme summer heat, Arches National Park currently recommends carrying 2–3 liters per person even for front-country hikes and at least 4 liters for backcountry travel. That is why we recommend a 3-liter reservoir for a general hiking pack: you don’t have to fill it for every hike, but the capacity is there when conditions demand it.
Food deserves the same planning. A 150-pound person hiking at a moderate pace can expend roughly 350–400 calories per hour, with substantially greater energy expenditure as climbing, pace and pack weight increase. You don’t have to replace every calorie while you’re hiking, but a long trail day is the wrong time to deliberately underfuel. A strenuous, all-day mountain hike can consume several thousand calories beyond what many people expect.
Bring food you will actually want when you’re tired: sandwiches, wraps or even cold pizza for lunch; trail mix, nuts, dried fruit and fresh fruit such as salted sliced apples; and bars or other compact foods that travel well. On demanding climbs and summit days, appetite sometimes fades and dry, dense food becomes surprisingly hard to swallow. Gels, chews, gummies or another easy source of carbohydrate can be invaluable when you need energy but don’t particularly feel like eating.
Carry extra food as part of your safety margin, too. If an injury, navigation problem or unexpected delay keeps you out through another meal—or in remote terrain, overnight—you should have something left in the pack rather than having eaten your last calories according to the original schedule.
Electrolytes become increasingly important as the day gets hotter, longer and sweat losses increase. Sodium is the major electrolyte lost through sweat, with smaller amounts of potassium and other minerals also lost. Salty foods and an electrolyte drink can help replace those losses while providing additional calories and carbohydrate. Even an “easy” hike can be high exertion for a new hiker, and arriving at the trailhead without breakfast, then hiking for hours on water alone, is an easy way to run out of energy.
We generally carry electrolyte drinks in a separate bottle and keep the 3-liter reservoir filled with clean water. It makes it easy to alternate the two, keeps sugars and flavoring out of the bladder and leaves clean water available for drinking, sharing or wound irrigation.
There is much more to both hydration and trail nutrition, but the rule for the Ten Essentials is straightforward: carry enough for the hike you expect, then leave some margin for the hike you didn’t expect.
10. Emergency Shelter
Emergency shelter is probably the Essential most likely to make a new day hiker wonder whether this whole system has gone too far.
It doesn’t mean carrying a tent on every afternoon hike.
A lightweight emergency bivy, space blanket or other compact shelter can provide basic protection from wind and exposure if an injury, route problem or unexpected delay prevents you from getting back when planned. In wetter country, rain protection becomes part of the same conversation. The appropriate shelter grows with the seriousness of the terrain and the amount of time it would take outside help to reach you.
This is really the thread running through the entire Ten Essentials system. The farther you travel from the trailhead, the more the consequences of a small problem can grow. Preparation adds time and options.
You may carry an emergency shelter for years without using it.
That is a perfectly good outcome.
Trekking Poles Earn Their Place
Hiking poles do more than improve balance. Biomechanical studies of downhill walking have shown that poles can reduce forces acting at the knee, with one of the best-known studies finding reductions approaching 25% under the downhill conditions tested. The effect varies with terrain and how the poles are used, but the basic principle is sound: some of the load that would otherwise be managed entirely by the lower body can be transferred through the poles and upper body.
That becomes especially noticeable on long descents. Poles give you additional points of contact for stream crossings, on loose or rocky ground, help control forward momentum and can reduce some of the repetitive loading your knees absorb over thousands of downhill steps. On climbs they serve a somewhat different role, helping establish rhythm and involving the arms, shoulders and torso in the movement.
Make Preparation Part of the Hike
You don't need to rebuild your pack from scratch every weekend. A simple routine keeps the essentials together and leaves only the trail-specific decisions for the morning of the hike.
Keep a Core Kit Packed
Headlamp, first aid, repair items, emergency shelter and other small essentials can live in your daypack. That makes forgetting them much less likely.
Check the Trail, Not Just the Weather
Look at elevation, exposure, water availability, route complexity and how quickly you could get back to the trailhead. Two hikes on the same day can require very different packs.
Download Before You Leave
Save offline maps and route information while you still have reliable service, then make sure the phone, GPS or satellite communicator has enough power for the day.
Tell Someone Where You're Going
Leave the trail name, general route and expected return time with someone who isn't hiking with you, particularly when heading into remote country.
Adjust for the Season
The Ten Essentials are a framework, not a frozen packing list. Summer desert hiking, winter mountains, Sierra shoulder season and a shaded coastal trail each require a different version of the system.
Confidence Without Carrying the Whole Gear Closet
Good preparation should make hiking feel simpler, not more complicated.
Once the basic systems are covered, you can stop thinking so much about the gear. There is water when you’re thirsty, another layer when the wind comes up, a headlamp if the day stretches out and a way to deal with the small problems that occasionally happen outside.
The Ten Essentials also expand naturally with the places you want to explore. Your first version might be built for a few miles in the Santa Monica Mountains. As you begin hiking longer routes, moving into the Sierra or traveling to places with bigger weather and more remote terrain, the same ten systems become more capable.
You don’t need all of that equipment on day one.
You need a comfortable pair of shoes, a pack that fits, an understanding of the trail ahead and enough preparation to come home wanting to do it again. Over time, the rest becomes less like a packing list and more like experience.
And that is where hiking gear belongs—in the background, while you pay attention to the trail.
