80% Nylon, 20% Lycra - 2-way stretch Support Web; 80% Coolmax, 20% Lycra - 4-way stretch body fabric; Machine wash warm with like colors. Line dry in shade, do not tumble dry. Do not bleach. Do not iron. Do not dry clean. Flat seam construction eliminates abrasion, increases comfort and enhances fit. Reflective logo increases visibility in low light conditions. UPF 50+ for UVA/UVB protection Thailand