Arc'teryx just launched a huge sale on REI from $39 — save up to 40% on the best winter gear

Need a new hat for the trails? The Arc'teryx Bird Word hat is made with breathable, stretchy material and a soft, quick-drying headband that will keep your head feeling airy and dry. It will get the job done on the toughest of routes.

This racerback, crew neck tank top features a breathable fabric that wicks moisture away and dries quickly, making it perfect for longer hikes. It's soft, comfortable and built for performance.

Get ready to run with speed, freedom and performance when wearing these shorts. From the gym to the trails, you can feel confident that the shorts will keep up. They feature abrasion-resistant fabric and have excellent stretch for comfort.

This long-sleeved exercise top was inspired by running apparel, but then adapted to make it suitable for mountain-based high-intensity activities. Its breathable, maximizes airflow, and is designed to reduce chafing.

Whether you're breaking a sweat at the gym or on the trails, this light and airy t-shirt will be your best friend. It has an antimicrobial treatment to resist odor and keep you smelling fresh.

If you have some backcountry adventures planned, this is the hat you'll want to bring along. The Arc'teryx Cranbrook hat has a wide brim that shades your face, ears and neck from the sun, and it's ventilated to keep you nice and cool.

Suitable for just about any adventure, this hoodie provides thermal comfort, stretch and sun protection. It also wicks moisture and remains airy, which is perfect for protecting yourself in the great outdoors.

These lightweight bottoms from Arc’teryx just got a $20 discount in the Soulsonic hue. Arc’teryx’s Polygiene treatment helps with odor, while the Torrent brushed fleece is soft against your skin.

Designed with mountain climbers in mind, this handsome fitted hoody is ultra-breathable and stretchy. Made from Polartec Powder Dry Fleece, it also provides plenty of insulating power, despite weighing just under 8 ounces.

Like the Delta Pullover above, the half-zip version is built for maximum mobility, breathability and sweat-absorbing prowess. Ideal for a range of outdoor adventures, this cozy fleece provides ample insulating power despite its lightweight design.

Lightweight, comfortable and breathable, this durable waterproof and windproof jacket will protect you from the elements without sacrificing features or packability. It's a great option for layering or wearing on its own.