Relax your back on the stability ball back and unwinds during the boat stance.
ANTI-SLIP DESIGN – Multiple slip-resistant horizontal lines encircling 360° across perimeter of ball provide firm grip to prevent the fitness ball from slipping underneath your weight and causing you harm. Portable design for indoors and outdoors use, and conveniently stored by releasing gas, folding and packing away in a closet. Sturdy, long-lasting, flexible and anti-burst design exercise ball can endure up to 250kg weight.IMPROVE BALANCE, STRENGTH & FITNESS/INSTRUCTION MANUAL INCLUDED – Yoga ball is the perfect balance training equipment improve stability, versatile gym ball for whole body exercise and stretching muscles to relieve stress.