Ab Sculpter Wheel with Large and Thick Knee Pad Mat- #1 Recommended Ab Roller Dual Wheel for Best Abs Workout :: Top Rated Exercise for Abs Toning Retern to Form - Ab Sculpter Wheel with Large and Thick Knee Pad Mat- #1 recommended ab wheel for effective results TOP RATED FITNESS TOOL - Best abdominal workout, promotes the greatest amount of weight loss and muscle toning in the healthiest manner possible. Effective in building endurance, stamina and speed. A favourite amongst Boxing, MMA, CrossFit and Cross Training enthusiasts. HIGH QUALITY CONSTRUCTION AND MATERIALS. Stylish Smooth turning Dual matt black plastic roller wheels with metal axle - they provide a snug fit with the foam handles and ensure no wheel wobble and stability while you roll 0.4inch / 10mm THICK Knee Pad Included made from NBR - the same material used in high quality expensive yoga mats - this is the only Ab Wheel on the market to include this quality and size of knee mat - no more aching knees 12 Month Warranty