We use cookies to give you the best experience possible. Your browser is set to block cookies so some features may not work as expected.

Hey there, the rules of web surfing say we need to inform you that we use cookies to give you the best experience possible. By continuing to browse our website you are agreeing to our use of cookies. Find out more in our Privacy Policy.×

Your language has been set to English. Please select your preferred language: Or › Continue In English

Free 2-Day Shipping / Free Returns The Arc'teryx Guarantee

Phase SL Bottom Men's - RevisedSynthetic, moisture wicking, superlight baselayer for high output use.


Shop Online - Inventory Search

Select your size and colour to buy direct from Arc'teryx or from authorized online dealers.

Free 2-Day Shipping On ALL OrdersFree 2-Day Shipping On All Orders

Check online dealer inventory

Sorry, no inventory found at our dealers.

This item is out of stock at Arc'teryx BUT it is available to buy from our online dealers.

Add to Arc'teryx Cart - Free Ground Shipping Over $200

This item is out of stock at Arc'teryx. Add to Wishlist?

Click to Zoom
Phase SL Bottom Men's Silkweight Phasic™ baselayer bottom for high output in cooler temperatures. Phase Series: Moisture wicking base layer | SL: Superlight.

Silkweight Phasic™ baselayer bottom for high output in cooler temperatures. Phase Series: Moisture wicking base layer | SL: Superlight.

4 Detail Photo(s)
TRAIL RUNNING;running;adventure;apparel;athletic running;competition;Course a pieds;cross country;cross country running;distance running;endurance;endurance running;equipment;gear;jogging;long distance running;marathon running;mountain;mountains;orienteering;road;road running;runner;running;running apparel;running clothes;running clothing;running gear;running pace;running shorts;running tights;speed walking;trail;trail running;trails;training;valley;valleys;walk jog run;xc;F11-phase-mens;F11-phase-all;S12-coolrunning-all-PPC;ACTIVITY/ MOBILITY;active;activity;aerobic;anatomical;aroebic;articulated;articulation;athletic;comfort;dynamic;endurance;ergonomic;fast moving activity;gardening;mobility;motion;movement;performance;range of motion;stretch mobilityALL PRODUCTS;all;everything;entire;collection;ARC; all products;arc teryx;arcteryx;arc'teryx;B.C.;bc;british columbia;canada;equipment;gear;innovation;innovative;outdoor;outdoor gear;performance;quality;sports equipment;technical;vancouver;ENDORPHIN FITNESS;active;activity;aerobic fitness;aerobics;apparel;body fitness;cardio fitness;endurance;equipment;excercise;excercises;exercise equipment;exercise fitness;female fitness;fitness;fitness equipment;fitness sports;fitness training;fitness workout;gear;gym;gyms;health & fitness;health and fitness;health clubs;ladies fitness;personal fitness;physical fitness;pilates;sports and fitness;technical;training;treadmill;wellness;workout;workouts;yoga;excercise clothing;running clothing;runnS12-coolrunning-all-TA;S12-coolrunning-nexttoskin-PPC;S12-coolrunning-nexttoskin;S12-coolrunning-all;F11-powder-mens;F11-powder-all;F12-Holiday3-51to100-baselayers;F12-Holiday4-Baselayer;
S, M, L, XL, XXL
110 g / 3.9 oz
Sizing Chart: 


Designed for high-output activities, the Phase SL bottom is a silkweight performance baselayer that rapidly wicks moisture, stretches with the body. The next-generation Phasic™ SL polyester yarns speed dry times, improve moisture transfer and elevate overall comfort. Articulated patterning and a gusseted crotch facilitate ergonomic freedom, and flatlock seam construction minimizes potential irritation. Updated style lines and improved fit.

Learn More About This Product


Moisture wicking base layer for interval activities.

SL | Super Light

Uses the lightest weight materials available to provide high weather protection, performance and/or packability, but with the right amount of durability.

Full Feature List

Technical Features
  • Moisture-wicking
  • Breathable
  • Lightweight
  • Quick-drying
  • Mechanical stretch textile for unrestricted mobility
  • Flatlock construction improves next-to-skin comfort
  • Next-to-skin fit aids thermal efficiency and moisture transfer
  • Anatomical shaping for fit and comfort
  • Gusseted crotch
Waist & Belt Configuration
  • Elasticized waist


  • Phasic™ Technology by Teijin  
  • Phasic™ SL—100% polyester


  • Machine wash in cold water.
  • Tumble dry on low heat.
  • Iron on low heat.
  • Do not use fabric softener.


  • Best in Test - Klikk (Norway)
Your Wishlist
Product Reviews
Questions & Answers