WYZworks Core Slider - Set of 2 - Dual Sided Sliding Exercise Gliding Discs for Carpet and Hardwood Floors Strengthen your core with our triangle shaped sliders, ideal for flexibility and conditioning workouts. Each slider glides across the floor and opens up a wide range of challenging exercises. Two-Sided design made to work on hardwood, laminate, tile or carpet flooring. Measures 7.5" across each point.