Perfect Fitness Ab Carver Roller for Core Workouts, White and Gray Description The Perfect Fitness Ab Carver is an ab roller with built-in resistance to help maximize muscle growth and definition in abdominals and arms. A kinetic engine, comprised of a durable carbon steel spring, offers resistance on the roll out and assistance on the roll back to amplify ab and arm activation, and provide a complete core workout. With an ultra-wide wheel tread that increases stability, it’s easy to carve left or right to work obliques, and tailor workouts to be easy, medium, or hard. The Perfect Fitness Ab Carver features ergonomic hand grips that are angled to help activate arm and core muscles; handles are removable for easy storage and transport. Ab wheel measures 9 x 18 x 8 inches, and weighs 4.6 pounds.. Features: Ultra-wide ab roller wheel with built-in resistance to help maximize core workouts Interior kinetic carbon steel spring offers resistance on the roll out and assistance on the roll back to activate abdominals and arms Ultra-wide wheel tread offers stability for multidirectional exercises, and makes it easy to tailor workouts to be easy, medium or hard Ergonomic hand grips are angled to activate arm and core muscles; handles are removable for easy storage and transport Product Details: Brand: Perfect Fitness Color: White and Gray Material: Carbon Steel Item Weight: 4.6 Pounds Style: Ab Roller Maximum Weight Recommendation: 4.6 Pounds Product Dimensions: 16"L x 8"W x 9"H Brand: Perfect Fitness Color: White and Gray Material: Carbon Steel Item Weight: 4.6 Pounds Style: Ab Roller Maximum Weight Recommendation: 4.6 Pounds Product Dimensions: 16"L x 8"W x 9"H Item Package Dimensions L x W x H: 9.17 x 8.03 x 7.91 inches Package Weight: 2.26 Kilograms Item Dimensions LxWxH: 16 x 8 x 9 inches Brand Name: Perfect Fitness Country of Origin: China Model Name: Perfect Fitness Ab Carver Number of Items: 1 Manufacturer: Perfect Pushup, LLC Part Number: 31041 Included Components: Ab Wheel Date First Available: April 15, 2013