The CORTEX Ab Roller fits all fitness levels, and is highly recommended for those looking to incorporate a dynamic and high-intensity abdominal and core workout into their workout routine. Feel the intensity through your upper & lower abs, lower back and obliques. General High Grade TPE Material Ergonomic Rubber Hand Grips Knee Pad Included Dimensions and Weight Net Weight: 0.5kg Warranty: 12 Months Parts replacement warranty