Sizes S, M, L, XL, XXL
Weight 143 g / 5 oz
Fit Next-to-skin
Materials Phasicâ„¢ AR

Where to Buy

sponsored links
Help support this site by making your next gear purchase through one of the links above. Click a link, buy what you need, and the seller will contribute a portion of the purchase price to support Trailspace's independent gear reviews.

Manufacturer's Description

Visit Arc'teryx's Phase AR Bottom page.

Retailers' Descriptions

Here's what other sites are saying:

A great midweight base layer for all-around use in cool temperatures, the breathable Arc'teryx Phase AR long underwear bottoms deliver moisture-wicking, quick-drying performance.


Created for high output in cooler temperatures, the Arc'teryx Phase AR Bottom is a men's midweight baselayer for made from next generation Phasic AR. An Arc'teryx fabric engineered to provide insulation, dry quickly, and offer performance stretch, Phasic AR uses different polyester yarn structures on its interior and face to most effectively wick and disperse moisture. Strategically placed silkweight Phasic SL panels improve thermal regulation and reduce bulk.

- CampSaver.com

The Arc'teryx Men's Phase AR Boot Cut Bottom is a midweight base layer for cool to cold weather. The AR equals All Around, so whatever your activity, this fabric can handle the job. The Phasic; 100% polyester fabric is soft, stretchy and wicks moisture so you can stay comfortable. Dries quick and the shorter cut allows you to wear tall socks, creating less bulk under your ski (or other) boots. Features of the Arcteryx Men's Phase AR Boot Cut Bottom Moisture-wicking Breathable Quick-drying Mechanical stretch textile for unrestricted mobility Merrow stitch seam construction reduces seam size Flatlock construction improves next-to-skin comfort Hybrid mapping reduces bulk while improving thermal regulation Silkweight phasic SL panels at back of knee reduce bulk while improving thermal regulation Next-to-skin Fit aids thermal efficiency and moisture transfer Below the knee length for comfort under ski, mountaineering and hiking boots Anatomical shaping for Fit and comfort Gusseted crotch Comfort waistband with laminated, soft-brushed finish Non-chafing label Moisture wicking base layer for interval activities Provides High Performance and weather protection and Highlights a range of Features to give All Around versatility in multiple activities

- Moosejaw

Throwing down on a cold-weather climb or tackling a skin track on your skis can lead to massive, chilling sweat build-up. Arc'teryx engineered the fabric in the Men's Phase AR Bottom to quickly move this moisture away from your skin, disperse it, and help it evaporate so you stay dry and warm.

- Backcountry.com