IR Men's K2 Long Sleeve Shirt is made of 7 oz Polaretec®  PowerDry® polyester single-sided fleece with waffle grid texture on the inside. The fabric is only slightly heavier than a t-shirt, but the spaces in the grid trap heat and offer truly surprising warmth for such a light and supple fabric while offering great ventilation and breathability. It wicks great and feels nice next to skin. IR “K” Series garments are loose, technical layering pieces that fit like a t-shirt, and the K2 long sleeve is the ‘midweight’ shirt in the lineup.

Regular colors: Grey looks like Dk Grey