Nano-level cooling minerals are kneaded into the fibers, achieving approximately 1.6 times the cooling effect of general materials. Equipped with highly heat-reflective special materials and UV cut function, it can be worn comfortably even in hot seasons. The stretch smooth material provides both a moderate fit and ease of movement, and quickly absorbs, disperses, and dries sweat. It keeps you comfortable even during long hours of wear. Material: 88% Nylon, 12% Polyurethane Brand new, unopened Vapor Gray, Size M