Base layer. Built differently. The Men's Long Sleeve Running Base Layer is designed with comfort and performance in mind. Run warm in the coldest of climates without overheating.
Chafe-free running, guaranteed
Hand-warming mitts, convenience at your fingertips
Dynamic heat control, run warm without overheating
Flexible fit, ultimate comfort on its own or under a top
Seamless design, no side seams or labels and reduced waste
Moisture-wicking, removes sweat from your skin quickly