WZY&JYM Men's Cycling 3D-Padded Compression Shorts 80% Polyester& 20% Spandex. Ergonomic 3D padding prevents abrasion and saddle sores for exceptional impact protection. Strategically elastic mesh fabric on the center back for ventilation. Anti-microbial treatment prevents odor and printed elastic band for a snug fit. Reflective elements for increasing visibility.