Bouldering Gear Checklist – What to Pack for Indoor vs. Outdoor Sessions

Bouldering offers two distinct experiences: controlled indoor sessions and adventurous outdoor climbs.

Indoor gyms provide structured routes and safety mats, while outdoor problems demand preparation for unpredictable terrain and conditions.

Having the right bouldering gear ensures safety, comfort, and performance in both environments.

Packing carefully allows climbers to focus on movement rather than worrying about missing essentials.

Core Gear for Both Indoor & Outdoor Bouldering

Climbers of all levels rely on a core set of essentials that remain consistent in both indoor gyms and outdoor crags.

Climbing shoes come first, as they directly influence performance and comfort. A secure fit is critical, since loose shoes compromise precision and tight shoes create unnecessary pain.

Having the right pair on the right surface provides better grip and control, especially during long sessions.

Chalk is another non-negotiable tool in every climber’s bag. It keeps hands dry, reduces slipping, and gives confidence in demanding problems. Loose chalk works well in buckets, while liquid chalk is often recommended indoors to cut down on dust in shared gym environments.

Outdoor sessions benefit from larger chalk buckets that remain steady on uneven ground, making them both practical and efficient.

A bouldering brush belongs on the list of essentials. Brushing down holds before or after an attempt not only improves grip but also contributes to preserving rock quality and respecting the climbing community.

Brushes with natural bristles are gentle on rock and provide excellent cleaning power without causing damage. Climbing tape is equally valuable, functioning as protection against finger injuries or as a quick fix for skin splits.

Even minor cuts can end a session early without proper taping. Hydration is critical, too, and a simple water bottle or hydration bladder prevents fatigue while keeping energy levels steady.

Long sessions demand consistent water intake, especially outdoors under the sun. To complement hydration, small snacks such as protein bars, fruit, or nuts help maintain stamina and keep energy levels high throughout the day.

A thoughtful combination of these essentials allows climbers to focus less on logistics and more on movement, problem-solving, and progression.

Indoor-Specific Bouldering Gear

Climbing indoors requires a slightly different setup compared to outdoor sessions, as gyms focus on controlled conditions, structured routes, and shared spaces. Convenience, hygiene, and efficiency matter most, so the gear list is shorter yet highly specific.

Softer climbing shoes are preferred indoors because they provide excellent smearing ability on plastic holds and make delicate movements easier. Many climbers reserve an indoor-only pair to extend the life of their outdoor shoes.

Chalk management indoors is important not just for grip but also for cleanliness. Smaller chalk bags are usually enough since climbers rarely need to move far between problems.

Many gyms encourage or even require liquid chalk, as it cuts down on airborne dust and promotes hygiene in shared facilities.

Keeping a personal bottle of liquid chalk avoids relying on borrowed supplies and ensures consistent performance.

Access to the gym is another practical detail. Carrying a membership card or key fob in the bag prevents wasted time at the front desk. Adding small items for comfort can also improve the indoor climbing experience.

A towel or set of wipes is extremely useful for cleaning chalk-covered hands, wiping sweat, or freshening up shoes between climbs. These details may feel minor, but they make sessions smoother and more enjoyable.

Indoor climbing is all about maximizing training time within a shorter session.

Packing light while still covering these essentials helps climbers focus entirely on movement, problem-solving, and performance, without distractions caused by missing or unnecessary bouldering gear.

Outdoor-Specific Bouldering Gear

Outdoor climbing requires a more comprehensive kit since the environment is less controlled, and safety becomes a bigger responsibility.

Unlike gyms, where mats are already provided, outdoor climbers need to bring their own crash pads. These pads are the foundation of protection, cushioning landings on uneven or rocky terrain.

Many climbers combine multiple pads to create a safer landing zone. Designs vary, with taco-style pads that fold into a curve, hinge pads that fold flat for easy transport, and larger pads that provide greater coverage at the cost of weight.

Approach shoes are another crucial addition.

Sturdy shoes with good traction save energy and keep feet safe before switching into climbing shoes at the problem. Navigation is equally important since outdoor areas often lack signage.

Many climbers rely on printed guidebooks or digital apps like Mountain Project or Kaya for directions, problem grades, and area maps.

Sessions often extend into the evening, so carrying a headlamp prevents accidents and allows safe exit after sunset.

Warming up outside is more difficult than in gyms with designated spaces, so a portable hangboard or simple warm-up tools keep muscles ready and reduce the risk of injury.

Outdoor climbing also places more strain on the skin, so carrying a repair kit with creams, tape, super glue, or a sanding block helps treat splits and prolongs sessions.

Safety goes further with items not usually needed indoors. A compact first aid kit provides peace of mind in case of scrapes, sprains, or cuts. Sun protection is essential during long days at the crag, making sunglasses, sunscreen, and hats non-negotiable.

Weather conditions can shift quickly, so packing extra layers such as a windbreaker, gloves, or a light jacket prevents discomfort. A mid-sized backpack in the 15–30 liter range keeps everything organized and easy to carry.

Responsible climbers also bring a trash bag to pack out waste, practicing leave-no-trace ethics to keep climbing areas accessible for future use.

Carrying this extended kit prepares climbers for variable conditions and ensures safety and comfort while enjoying outdoor challenges.

Proper preparation transforms a demanding environment into an enjoyable and rewarding climbing experience.

Optional But Useful Extras

Certain items are not strictly necessary but can significantly improve the overall climbing experience.

Extras often add comfort, efficiency, and safety, especially during longer or more technical sessions. Carrying additional chalk, for instance, ensures supply never runs out.

Running low on chalk can disrupt rhythm and cut a session short, so having a backup bag or block removes that worry. Kneepads also make a big difference when attempting problems that require knee-bars or body compression, providing both protection and friction support.

Recording attempts has become popular for both training and fun. A camera or phone mount allows climbers to capture footage for reviewing beta later or simply sharing progress with friends.

Some climbers also like to keep a notebook on hand for jotting down movement sequences, personal notes, or reflections about difficult problems. Written records can prove useful when returning to unfinished climbs.

Outdoor climbing carries an additional responsibility: respecting the rock and environment. A tick brush helps remove chalk marks left on holds, preserving the natural look of boulders and promoting leave-no-trace ethics.

Maintaining clean problems also ensures the climbing community continues to have access to crags without conflict with land managers or other visitors.

The Bottom Line

Preparation sets the tone for a productive and safe bouldering session. Indoor sessions emphasize convenience and minimal bouldering gear, while outdoor climbing demands additional equipment to handle terrain, weather, and safety considerations.

Checking gear the night before reduces last-minute stress, and clear communication with partners keeps everyone on the same page.

Staying organized, prepared, and safety-conscious ensures every climb is approached with confidence.