Tectonic Sliders - Core Sliders For Crossfit, Bodyweight, Abdominal Workout- Dual Sided Design For Hardwood and Carpet Floors NEW GRIP LINES!  For better grip and control LIGHTWEIGHT AND PORTABLE  For convenience when youre on the go! DIAMETER 7 INCHES, DUAL SIDED  For hardwood and carpet floors WHOLE BODY TARGETING  Burn fat and build strength by hitting upper body, core, and lower body exercises