Features: 1 arc design, full palm match more comfortable 2 Strengthen the anti-skid chassis, don't harm the floor, the silicone anti-skid sheet firmly grasps the ground, don't worry about slipping when exercising, and might protect the floor from being scratched 3 Smooth and durable, the interior transmission adopts metallic ball design, rolling friction reduces movement resistance, ensures the steadiness of the twisting disc, and has a long carrier life 4 Abdomen and waist, it may be used in office/home/camping outdoors/anytime and anywhere 5 Can be placed anywhere, smooth to shop and deliver How to use: 1 Before utilizing ,please drink 200-500CC heat boiled water to stimulate the circulation of blood to achieve a closer effect 2 Put your toes on the waist-twisting device, twist your waist and stomach on the left and appropriate sides, meanwhile maintain your either arm&;s stability three It may be a standard phenomenon and a good impact after gymnastic activity if the colour of urine becomes deep or the temperature of the human body gets excessive 4 You must persevere in the exercise of twisting waist, thus it will reach a strong and strenuous impact in your body Note: 1 allow 1-3cm error because of guide measurement pls ensure you don't intellect before you bid 2 to the variation between diverse monitors, the picture won't mirror the particular color of the object Thank you! Package includes: 1 x Twist Waist Disc Board (without retail package)