Fitness clothing - the sleeveless men's sport vest dries quickly, protects from the sun's harmful rays and offers absolute comfort all day long. | sweat less - with its innovative material, the white tank top draws sweat away from the skin, dries quickly and has net inserts for extra ventilation. | optimal comfort - the men's muscle shirt has all the advantages of ua compression, and yet is comfortable enough to be worn all day. | sun protection - with upf 30+, the running gear for men protects against harmful sun rays and the 4-way stretch fabric allows full mobility. | material and fit - under armour men's tank top ua heatgear armour, sleeveless men's gym vest. Material: polyester/ elastane. Fit: compression.