SaryEdge Blue Yoga Ball Chair for Office Desk, Ergonomic Exercise Ball Stool with Base, Stability Ball Chair for Adult/Pregnancy/Heavy People

? ?【Improve Posture】 The balance ball chair can provide a comfortable and dynamic sitting experience, combining comfort and ergonomic back support to relieve pain caused by sitting for a long time and reduce back pain. ? ?【HEALTHY EXERCISE BALL CHAIR】 The stability ball chair promotes continuous muscle contraction, stimulates blood flow, strengthens core muscles, and improves stability and balance. This product is also very suitable for use during pregnancy and childbirth. ? ?【Durable Material】The yoga ball chair base frame is made of high-quality ABS and environmentally friendly PE, which is sturdy and stable. The ball is made of thick PVC material, honeycomb structure, explosion-proof and can hold up to 350 lbs. ? ?【Easy to Install and Remove】It is very easy to install. Simply attach the seat back to the base and install. 4The Pilates ball and base are not connected and can be removed for exercises using only the ball. ? ?【INFLATION INSTRUCTIONS】 You may need to re-inflate the ball after initial inflation to allow the ball material to stretch to its final size. Inflate the ball with air, let it stand for 24 hours, deflate 50% and then inflate it again to a height of 55cm. (Be careful not to over-inflate)