Elite Sportz Exercise Sliders are Double Sided and Work Smoothly on Any Surface. Wide Variety of Low Impact Exercise&rsquo;s You Can Do. Full Body Workout, Compact for Travel or Home USE THEM ON ALL SURFACES, it wont matter what surface youve got at home or on your travels, because these double sided exercise sliders work smoothly on all surfaces SUCH A WIDE VARIETY OF EXERCISES TO TONE OR STRENGTHEN YOUR CORE, the possibilities are endless here. With such a wide variety of slider exercises to do, youll never ever be bored with them. Toning your tummy, legs or arms will be never be an issue again while you enjoy lunges, planks, bridges or simply make up your own exercises. We also have some great how to videos on our website (URL on packaging) for those that need some instruction SUCH A SIMPLE IDEA, BUT LOW IMPACT, EFFECTIVE AND FUN, with the Elite core sliders, your hands or feet never leave the floor, so its a total body workout that is very low impact but highly effective for core development. They will add so much fun to your daily workouts and think of all the extra flexibility youll have LIGHTWEIGHT TO TRAVEL WITH AND SO CONVENIENT TO USE AT HOME, our exercise sliders are so light and compact that you can pack them in any bag and take them wherever you travel. Take them to the gym or if its more time efficient and convenient, stay at home and still get an awesome home workout in IF YOU DONT ABSOLUTELY LOVE YOUR CORE SLIDERS FOR EXERCISE, YOU'LL GET YOUR MONEY BACK, at elite sportz, customer satisfaction is our number 1 priority. If you're not 100% happy with our Discs, please contact us for your money back