• Large diameter, easy to inflate, with a non return valve to prevent air backflow when blowing, faster and more labor saving inflating, the reverse valve is specially designed for mouth blowing. It only takes half or half a minute to breathe, and the air valve can quickly inflate.
• Fully ergonomic design, 75 streamlined design, make the S curve of the spine stay more comfortable. When you inflate it to the pressure and size you want, it will fit your back perfectly.
• Fully ergonomic design, 75 deg streamlined design, keep the spine S curve more comfortable, when you inflate it to any pressure and size you need, it will fit your back perfectly.
• 4 Fully ergonomic design, 75 deg streamlined design, keep the spine S curve more comfortable, when you inflate it to any pressure and size you need, it will fit your back perfectly.
• 4 Fully ergonomic design, 75 design, keep the curvature of the spine more comfortable when you inflate it to the pressure and size you need, it fits your back perfectly.