METEOR Essential Anti-Burst Swiss Ball with Pump Multiple Sizes: 45-55cm Kit Includes: Hand Pump / Spare Plug / Plug Remover Application: General Exercise / Office / Pregnancy / Therapy Assorted Colors: Green  Features: Non-Slip Surface / Thick PVC Material / Anti-burst Microcells VERSATILE Exercise & Fitness A great fitness tool to improve strength, balance, and cardio endurance at your home workouts or in the gym. Rehabilitation & Therapy A versatile piece of equipment available to help with back pain relif and many other medical conditions. Pregnancy & Birth Strengthen your stomach and back muscles, improve your posture, and prepare your body for delivery. Office & Work A good ergonomic chair to fit your body perfectly, keeping your forearms parallel to the desk and your elbows by your side. DECENT QUALITY Anti-Bursting Structure METEOR Essential Swiss Ball contains micro-hexagonal cells that are structurally more stable, which allows the swiss ball to deflate slowly in case of a puncture. Maximum Capacity Thanks to the concentric circle pattern and extra thickness, METEOR Essential Swiss Ball can withstand over 200kg of pressure, making it an ideal exercise tool for every user. Extra Thickness The thickness of the skin defines the quality of a swiss ball. METEOR Essential Swiss Ball uses added thickness material, properly made with added safety. About Sizing Occassionally we receive feedbacks from customers that the size of the swiss ball is not 100% accurate. This is perfectly normal for this type of product as factors like inflation rate, environment tempreture etc. will affect the size of the swiss ball after inflation. *For Optimal Sizing, please try to use an electric pump where possible, and inflate till all the creases on the surface disappear. Top Grade PVC Added thickness for extra durability The use of swiss ball involves a lot of contacts between the ball surface and our skins. METEOR Essential Swiss Ball uses non-recycled material to ensure a minimum amount of toxic emission, making it safer for everyday use, even for pregnant woman and children. FOLDING CREASE is perfectly normal and will disappear over time if the ball is fully inflated. UNDER SIZING is rarely seen on our swiss ball presuming that it is fully inflated to its ideal size. DEFLATION can be avoided if the air valve is plugged in correctly and used on flat surfaces.   Package: 1 x Anti-Burst Swiss Ball with Pump