Pro Series Exercise Ball Slow Deflate Red 55 cm Walker Wheels Stands on its own without Cups are 7 Stands on its own without installation so it can be used for added safety and stability all over the bathroom * Easily fits around your toilet to provide safe support and assistance while sitting down or rising from the toilet * Stand alone design allows safety rail to be used at the toilet or sink * No installation necessary * Tool free assembly * Provides safe support while siting or standing * Weight Capacity: 300 lbs * Non Rust Plastic Body And Wheels Excellent Retail Packaging * This ball was specially designed to deflate slowly if punctured thereby reducing risk of injury * Provides improved stability at the points of body contact and enhanced performance due to the responsive surface design * Comfortable to sit on * Great grip thanks to built in latitudinal ridges and an outstanding texture that doesn t feel like plastic * Comes with two plugs an inflation adapter a measuring tape to help insure proper inflation and a poster detailing 24 exercises