The core muscles are the seat of power for many athletic movements. Simply put, powerful movements start with the core. Build firmer and stronger abs. Extra-wide single wheel with ergonomic handles lets you perform roll-outs, inch worms, lat/diagonal pulls, and rolling planks. Textured, molded plastic wheel. Wheel: 2-1/8" W x 7" diam. Handles: 4-1/4" L. Assembly required. Teal/Black. 1 lb.