Craft Sportswear Men's Cool Long Sleeve V Neck Base Layer Wicking UPF 50+ Top with Cool Mesh Panels : protection/ventilation/bike/cycle/ski/outdoor/sport 93% Polyester/ 7% Spandex Made in US 91% polyester,9% Lycra Made of Craft COOL fabric which keeps you cool, comfortable and dry. Flat seam contour construction keeps you comfortable a reduces the chance of chaffing. wash with smiliar colors, do not use softner, wash inside out, tunble dry low, do not iron China