Men's Brooks Atmosphere Short Sleeve - 211383-407 Size:M This base layer features Core

This base layer features Core Spun technology—which features Merino wrapped around a nylon core for added durability while still keeping the comfort of ultra-soft

3) Measure the length from your wrist to your armpit (on the inside of your arm

- Blister-free guaranteed

- L - 35"-37"

Our Men's Merino 250 Base Layer Colorblock Crew features 100% responsibly sourced Merino wool made with an interlock knit for enhanced comfort

Men's Brooks Atmosphere Short Sleeve - 211383-407 Size:M This base layer features CoreThe Atmosphere Short Sleeve provides cool coverage you can barely feel. Perfect for race day or on warmer runs, the ultra light fabric wicks away sweat and dries quickly for lasting comfort.