Project Rock training gear was built to help you find boundaries, then push right through them. Everything in this collection was personally approved by Dwayne Johnson, the hardest worker in the room. ANY room. Iso-Chill fabric helps disperse body heat, making it feel cool to the touch. 4-way stretch material moves better in every direction. Material wicks sweat & dries really fast. Generous dropped armholes & skinny racerback for full range of motion. Loose: Fuller cut for complete comfort. 90% Nylon/10% Elastane