The Men's Summit Base Layer Crewneck is the lifeblood for getting after it all winter long. Built for the early riser, the first chair to last call ripper who demands the highest quality in comfort and durability. The Summit series has a relaxed fit and features BlackStrap’s Versa fabric, providing a wide range of applications and warmth. The Summit Crewneck features a custom drop hem design, flatlock stitching, vented armpits, and thumb holes. BlackStrap’s VERSA fabric features Dual-Knit Technology and 4-way stretch for an undeniably comfortable and unrestrictive fit. It is also odor-free, machine wash and dryer friendly, and milled in the USA. Bottom line, this shirt has your back.