The Smartwool PhD Knit Arm Warmer is for those days when you just don't feel like wearing long sleeves but it's too cold out to wear a t-shirt. The seamless arm warmers keep your arms toasty and stretch for maximum movement. They come in a vast array of super exciting colors to match all your workout gear. As I was wondering why someone wouldn't just wear long sleeves instead, I realized these would make a great layer in chilly weather.

DECENT FEATURES of the Smartwool PhD Knit Arm Warmer

• Seamless construction for warmth with maximum freedom of movement
• Non-binding 1 x 1 rib welt at wrist and bicep opening keep warmers in place

The SPECS

• 61% Merino Wool, 36% Nylon, 3% Elastane