Epitomie Fitness Slider X Gliding Discs - Core Sliders Set For Core Workouts And Sliders Exercise (Exercise Sliders Perfectly Shaped For Hands & Feet) PERFECTLY CONTOURED & SHAPED - The Slider X gliding discs have a unique shape that is ergonomically contoured for hands and feet. Unlike other round core sliders, the natural contact surface area of your hands and feet are maximized giving you better movement resulting in an improved workout. USE ON ANY SURFACE - Sliding discs are perfect for home workouts and the double sided design adds additional versatility. Coarse side for hard floors and smooth side for carpets. Workout anywhere in your home and get results. STRONG TO THE CORE - Slide and glide your way to an improved physique. The Slider X exercise discs will give you an intense workout of the mid-section, strengthening your core to give you a chiseled midsection. Target individual muscle groups and workout your entire body as well COMFORTABLE & DURABLE - Use these exercise gliding discs for core strengthening, athletic conditioning, CrossFit, Hiit, physical therapy, yoga, dance, balance training and more. Not only do they reduce impact to protect your tendons and joints, but these power glide discs fit easily in any small carry bag so you can workout anywhere, even when traveling (size: 9 in x 7 in). LIFETIME REPLACEMENT GUARANTEE - The Slider X exercise glider discs are built tough and durable. They will withstand the most rigorous and extended fitness routines. We're so confident that we've use the best materials and construction possible that if they ever break on you, we will replace them.