TKO Ab Wheel Exercise Roller Core Training Workout Heavy-duty plastic construction for durability and longevity; rubber tread on the wheel has grips for added traction Molded handles on each side of the wheel provide a strong, secure grip while working out Perfect for getting an incredible upper body workout that targets your ABS, arms back and shoulders Feel the burn as you effectively tone and tighten your core, while increasing overall balance Seamlessly incorporate into your daily workout routine; up your fitness program and see the difference