From the manufacturer

Men's ColdGear Fitted Crew Long Sleeve

The last thing you need in the cold is another distraction. Stay locked in with this fitted ColdGear men’s baselayer that keeps you warm and dry without bulking or riding up on you at any point during your workout.

• Fitted: Streamlined fit that’s not too tight or too loose.
• Men’s long sleeve with dual-layer fabric that stays warm on the inside & dries fast on the outside
• Added breathability & ventilation with stretch-mesh back & underarm panels without sacrificing warmth
• Move better in every direction with 4-way stretch material
• Wicks sweat & dries really fast
• Designed to keep seams off of highly abrasive areas for added comfort
• Dropped, shaped hem & classic crew neck