Ab Roller Wheel for Abdominal Exercise from i4M Health & Fitness Offer, Workout Equipment for Abs that also Strengthens your Core, Arms, Shoulders and Back, Comfortable Foam Handles, Includes Knee Mat FACT: One of the Best Fitness Equipment for Abs, Essential for any Home Gym, used for Building, Strengthening and Toning Abdominal Muscles as well as Arms, Shoulders and Back Made of High Quality PVC and Steel Material with Comfortable Extra Thick Foam Handles with Extended Ends used for Connecting Any Kind of Resistance Bands Package also Includes Knee Mat (!!!), used to Protect your Knees from Scraping/Hurting We are Very Confident about the Product's Quality: 100% Satisfaction Guarantee + 100% Money Refund if not Satisfied GETS THE JOB DONE! Extremely Durable and Sturdy. Not One of Those Typical Plastic Ab Roller Wheels!