When the temperature starts to rise, maintain your performance with the Under Armour Heat Gear Sonic Fitted Sleeveless Training T-Shirt. Created from 90% polyester and 10% elastane, this sleeveless offering ensures you stay cool, dry and light courtesy of Under Armour's Heat Gear fabric. The lightweight material makes for a comfortable and supportive fit which hugs the contours of your upper body and keeps you cool as the action heats up. A stylish plain black design sees the Under Armour branding sported beneath the front and back of the neck whilst grey stitching runs down the chest. Whether worn for training as simply as casual leisure wear let Under Armour keep you cool and fresh all year round.