Soft and sustainable, the Tuvalu Tee is an ultrasoft pima cotton t-shirt crafted with our natural SeaCell fiber (organic seaweed and sustainable wood pulp) for comfort, performance and a nod to Mother Earth. Great for yoga (non-heated), training, traveling and chilling. Features Anti-Odor UPF Rating 4-Way Stretch 96% Pima Cotton with Sea Cell 4% Elastane