Compression innerwear, all-over compression, quick-drying, stretch, UV protection, antibacterial, and odor-resistant. Purchased for summer and used once or twice. Selling because it's the wrong size. This new undergarment from Muscle Power STB uses highly elastic, form-fitting stretch material and provides moderate compression to support muscles. Material: 80% polyester, 20% polyurethane Size: M Color: White Functions: UV cut, sweat-wicking, quick-drying, antibacterial, odor-resistant, stretch, anti-static Brand: YONEX