The SMAI Commercial Balance Trainer, also known as the Balance Trainer, is a functional piece of equipment for multiple applications. Used in order to significantly improve balance and core stability it can be inverted for added exercises such as balance ball push-ups. Air Pump included - always use the provided air pump to inflate to avoid over inflation. Specifications Material: PVC / PU Solid base Manual air pump included Width: 60cm Height: 20cm User weight: 120kg (See notes) Please note: It