What to Wear Climbing? | Gear That Moves With You

Figuring out what to wear climbing often stops new climbers before they even tie in. The good news? You already own most of it. Your current fitness gear works fine indoors, and the differences between gym and crag clothing come down to a few fabric and fit rules. The golden rule, per Black Diamond, is that every outfit should prioritize freedom of movement, comfort, and durability. Here’s what that looks like in practice.

Indoor Climbing Attire: Keep It Simple

At the gym, your regular workout clothes are almost always sufficient. REI notes that gym-goers should wear flexible pants and a shirt that isn’t too baggy or too revealing when viewed from below. Lightweight fabrics that breathe well work perfectly for the climate-controlled gym.

Fit is where most indoor mishaps happen. Baggy clothing can snag on the rope or interfere with your range of motion, so choose pieces that are stretchy and close-fitting without being restrictive. REI also advises leaving gloves and caps in your locker — your hands need direct contact with the holds, and a cap can block your view of the wall above you.

What About Shoes and Socks?

Climbing shoes are meant to be worn without socks for maximum sensitivity, though REI says thin socks are acceptable with rental shoes if you need extra comfort. If you’re new to the sport, skip the shoe purchase entirely: gyms rent them, so focus on getting comfortable with the movement before investing in your own pair.

One more comfort note: keep a pair of casual slip-on shoes in your bag for the gym bathroom between climbs.

Outdoor Climbing Layers: The System That Works

Outside, the weather does the thinking for you. Mammut recommends dressing in layers for temperature swings: climbing pants, a breathable shirt, a mid layer or fleece, and a climbing jacket. This system lets you add or shed insulation between routes instead of baking or freezing in a single outfit.

The effective layering formula works in three stages: a moisture-wicking base layer to pull sweat off your skin, an insulating mid layer to trap warmth, and a weather-protective outer shell for wind and rain. REI’s sport-climbing checklist also includes skin-shielding items like a hat and sunglasses, plus an emergency reflective blanket for unexpected weather.

One fabric rule applies everywhere outdoors: skip cotton. REI’s mountaineering guidance explains that cotton dries slowly and is a poor insulator once wet, so stick with wool or synthetic materials. When you’re hanging on a wall, damp, cold layers make the climb miserable fast.

Pants, Shorts, and What to Avoid

Both shorts and pants work for climbing, but pants are usually preferred for outdoor routes because they shield your legs from rock scrapes and brush. Stretchy hiking pants or shorts give you the mobility you need without the bulk. If you opt for shorts, make sure they don’t ride up and “flash” your belayer while you’re reaching overhead.

Steer clear of clothing with hard hardware like large buttons, zippers, or buckles — these dig into your waist when you’re harnessed. And empty your pockets completely before you climb; keys, phones, and chalk bags falling out mid-route are a hazard to climbers below.

For the approach hike to an outdoor crag, wear hiking shoes with good tread. They’re far safer than climbing shoes on uneven terrain and save your climbing rubber for the wall.

Common Mistakes to Skip

Most climbing outfit problems fit into a handful of repeatable errors. Baggy clothes that restrict movement or catch on rope, cotton layers that stay wet, forgetting that your clothes need to fit under a harness, and climbing with full pockets are the most common offenders. Indoors, that means no gloves or hats, and outdoors, it means never assuming a single shorts-and-tank combo will cover the day’s weather swings.

Beginners frequently overbuy gear before they need it. REI notes that first-time indoor climbers generally don’t need to buy climbing shoes right away since gyms rent them. The same logic applies to your wardrobe: start with stretchy, sweat-friendly fitness clothes and add abrasion-resistant layers as you move outdoors.

One safety note: never wear a harness while bouldering. Bouldering is done without a rope or harness system, so your outfit just needs full mobility for short, powerful moves near the ground. If you’re ready to upgrade your bottoms for outdoor routes, our tested roundup of the best climbing shorts covers the stretchy, harness-friendly options that handle rock abrasion.

Whether you’re clipping bolts at a crag or pulling plastic at your local gym, the principles stay the same: flexible, breathable, durable, and harness-compatible. Master those four qualities and you’ll have the right outfit for any climbing day.