The Level Tech Tee is Fourlaps' most technical tee and is engineered to perform in the toughest conditions and still look good enough to wear to brunch. 
Runner's world named it the ultimate year-round running top, and it's a great pick for any high intensity workout where controlling your body temperature is key. The secret 37.5™ technology which uses active particles to vent heat in warm conditions and retain heat if it's cold. A best seller, the tech in this shirt is proven to help athletes perfrom better. 
 
Features: 
 
Athletic fit 
Super-soft fabric
Powered by 37.5™ technology
Anti-microbial
Reflective "4" logo on back
Flatlock stitching creating thinner seams that reduce irritation and chafing
 
34% 37.5™ post-consumer recycled Polyester 
52% post-consumer Polyester
7% Wool 
7% Elastine
 
Fit:
Small - Chest 34"-36"
Medium - Chest 37"-39"
Large - Chest 40"-42"
X - Large - Chest 46"-48"