Nylon, UV Protectant, Moisture Wicking and Quick Dry. These T-Shirts look like a standard T, but have all the Tech benefits. This garment is 3D Knitted (Welcome to the future!) on a state of the art precision machinery, with thread composition that we have formulated (Microfiber Nylon 79% + 21% Polyester). This composition of fibers bring longevity to this staple garment and the quick dry /moisture wicking performance is absolutely superior.