Men's Cold Weather Layer - XLAn essential piece in any runners arsenal, this next to skin base layer delivers protection against the elements with a mock neck, full length sleeves, and intuitive thumbholes to keep hand warm during colder months. Delivering a slim fit silhouette that keeps you dry with a textured thermal interior; youll have no excuse not to run this winter. Everyday Run, Trail Running Lightweight and breathable 100% recycled polyester engineered mesh Mock neck