Features: Dual-wheel ab-roller this ab-roller training has two thick wheel supports, wider front and rear wheels, elbow support for smooth rolling and better control. Grow six-packs faster & safer-the abs wheel targets your abdominals, hip flexors-and back muscles. with dedicated-practice, this exercise wheel will speed-up-your core & low back strengthening while lessoning your risk of muscle injury. Efficient exercise equipment,unlike big-gym-machines, or heavy weight benches, dumbbells and the like, the ab wheel roller is portable size-wise -- a compact-design that enables you to take-it anywhere to exercise, be it your home-office, gym, or outdoors. Wonderful gift,sweet warm gift for friend family wife,girlfriend. Automatic rebound-design,built-in high elastic mute-spring, which helps reset-when bouncing back, so it is more convenient and controllable to use, effectively protect muscles from strain during exercise. Specifications: Material:Plastic Color:Orange,Blue,Pink Package Includes: 1 Piece Ab-Roller Wheel note: Please allow 1-2cm errors due to manual measurement. Due to the difference betweeen different monitors,the picture may not reflect the actual color of the item.