Sports Basement Men's Single Layer Crewneck Size:M Packs down to fit in

Packs down to fit in carry-on luggage and smaller packs

SLayerWarmth uses two sheets of insulation to create an air pocket that helps keep the warmth in and the cold air out

and durable to keep you on the move in all weather

finish: bio-based wicking finish

Castelli stripe logo across upper chest

Sports Basement Men's Single Layer Crewneck Size:M Packs down to fit inThe Sports Basement Single Layer Crewneck is your standard, dependable thermal underwear. Originally designed with the working professional in mind as a warm base layer, this base layer shirt features Acclimate Dry polyester fibers, which work to transport moisture away from the skin as you go about your day. This crew neck thermal features a flat seam construction for seam strength, durability, and longevity and a relaxed fit for everyday comfortable