Sports Research Sweet Sweat Ab Wheel Roller 3 inch Wheel for Abs TrainingFeatures Sports Research Ab wheel Roller helps you effectively strengthen and tone your abs, core, arms and back. The Ergonomically designed Ab wheel roller has a 3 inch wide wheel and rubberized non slip grips to maximize stability control and help you carve left, right and center. The Ab Roller has removable handles which allows compact storage and easy to transport. With the Ab Roller you also get a FREE foam knee pad to cushion your knees against