Exercise Ball, Anti-Burst and Non-Slip Stability Balance Ball with Quick Pump Included, Multiple Sizes&Colors\r\n\r\n Specification: Size: 45cm-85cm(diameter) Colors: Black/Pink Material: 2000 Micrometers thickness PVC, Healthy, Anti-bust 　\r\n Feature: - Professional quality PVC material, free of Harmful Contents; - Visual beauty, more fresh color to choose; - Anti-Burst, good grip, non-slip surface for safety; - Easy to inflate and easy cleaning surface; - Perfect for use with yoga, pilates, or for general strengthening and balance　\r\n How to inflate the ball? 1. Let the ball sit at room temperature for two hours. 2. Insert the tip of your foot pump into the ball\'s air valve and work the pump. 3. Inflate the ball to about 80% of diameter initially. Wait further for 24 hours before inflating to the recommended size. You should avoid using the ball within the first 24 hours. 4. Pumping it up again to the recommended size. 5. Insert the plug and let the ball sit for another day. 6. We have instructions, you can follow the instructions in the manual to install.　\r\n User tips: - Keep away from sharp objects; - Store your ball indoors at room temperature; - Clean your ball with a soft cloth or sponge and mild soapy water if needed; - If you need inflate the ball quickly,please use a large pump to inflate it.　\r\n　\r\n Package including: Yoga Ball x1 Quick Foot Pump x1 Air Plug x2 Plug remover tool x1