STABLE SIZE AND FITS MOST CHAIRS: Approximately 30x30x4 cm, with Velcro straps on the back. These square chair cushions fit most kitchen/bar stools, office/dining chairs, or any other type of chair. The straps on the back keep the chair cushion in place and prevent it from moving during use. COMFORTABLE AND ERGONOMIC DESIGN - Adding cushioned comfort to your existing chairs is quick and easy with this square chair cushion. This seat cushion, with its good support, reduces pressure on the tailbone and relieves pain from sciatica, herniated discs, tailbone injuries, etc. PORTABLE AND MULTIFUNCTIONAL - This square seat cushion comes with four straps that you can attach to the back of your chair. Just grab a chair cushion and take it with you for extra comfort anywhere in your home. You can also use it on your chairs in a pub, club, bistro, patio, garden, dining room, kitchen, home, etc., to reduce discomfort caused by prolonged sitting. DURABLE AND EASY TO CARE FOR - Strength and durability are built into every inch. Most importantly, these cushions are MACHINE WASHABLE! Machine wash in cold water, do not bleach, do not iron, tumble dry only on low heat, and your chair cushions will look brand new. HIGH-LEVEL PROFESSIONAL QUALITY - Our chair cushion has a superior 100% polyester shell and high-quality sponge filling. GUARANTEED quality that sets it apart from other square seat cushions! This item is sold by Alovez, please contact us in time with any questions, we are sure to actively solve the problem for you and ensure your satisfaction.