11 Arc'teryx deals to keep you warm all winter: up to 40% off at REI

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.

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.

This Arc'teryx long-sleeve crew is breathable, lightweight and quick-drying. It offers a soft feel and is up for any activity you plan to do, both indoors and out.

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.

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.

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

This Delta half-zip 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.

This lightweight and packable jacket is the best of the best. It's offers breathable warmth, protects you from wind and rain, and can be packed down into a tiny pouch that'll fit in your pack or pocket when you're not using it.

This deal is on the men’s Arc’teryx Atom Insulated Hoody, which is available in three different colors that are now on sale. Lightweight and weather-resistant, warm yet breathable, this high-tech piece of gorpware is fully worth the hype.

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.