Features: and Comfortable Non-slip Handle: Our for ab roller wheel has thick and eco-friendly rubber foam, soft and comfortable and elastic. The home exercise equipment can minimize hand fatigue while maintaining no slip even in the most sweaty movements. Safe and Stable: The ab wheel has wide and thick bearing roller, wear resistance and pressure resistance without noise, anti-skid stripe on the wheel, wear-resistant and non-slip. Ergonomic 3/4 Wheels System: Triangular structure provide excellent overall rolling motion stability. Perfect fitness system for beginners and advance use challenging difficult variations. Premium Materials and Solid Construction: Unlike other inexpensive Ab rollers, the ab wheel roller built-in thick steel material, thicked steel pipe, built-in thick steel pipe to enhance the bearing capacity. Perfect Fitness Device: Comfort workout at home, strengthens and Tones your entire body by hitting your Abs, Core, Torso, Shoulders, Arms, Upper Back and Lower Back. Our for ab roller is the for ideal home gym equipment. Specifications: Material: FoamandPU Wheel Color: Black Type Optional: Three-wheeled/Four-wheeled Size: approx.38.5x9.5cm/15.16x3.74in Package Includes: 1Pc x Roller Wheel note: Please allow 1-2cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.