NIKE Push Up Grips 2.0, OSFM (Black/Volt) Contents: 73% Polypropylene, 14% Thermoplastic Rubber, 13% Rubber. Elevated position / Allows greater range of motion for strengthening chest, triceps, and shoulders Ergonomically designed foam grip handles provide comfort during workout Stable, non slip base / Removable for easy transport Contents: 73% Polypropylene, 14% Thermoplastic Rubber, 13% Rubber.