Our reliable memory foam seat cushion, made from premium high-density memory foam materials and adopting ergonomic U-shaped cut out design, is designed to assist in most sitting pain caused by sciatica, herniated discs, tailbone injuries, pregnancy, hip pain and hemorrhoids and meantime promote a health posture. Additionally, it comes with a breathable and washable mesh cover to accelerate air circulation and keep you cool and comfortable all day and it can be used on any office chair, computer chair, armchair, wheelchair, car seat etc. *STRONG COCCYX SUPPORTIVE PERFORMANCE: Made from premium high-density memory foam materials and adopting ergonomic U-shaped cut out design, featuring long lasting use and never out of shape, to snugly fit and provide an optimal support for your coccyx and tailbone. *EFFECTIVE SCIATICA & TAILBONE PAIIN ALLEVIATION: Can assist in most sitting pain caused by sciatica, herniated discs, tailbone injuries, pregnancy, hip pain and hemorrhoids and meantime promote a health posture. *BREATHABLE & WASHABLE MESH COVER: Coming with a breathable mesh cover to accelerate air circulation and keep you cool and comfortable all day. And the zipper design allows you to wash the cover separately after removing it from the memory foam cushion. *WIDE APPLICATION: Its 17.32in long, 13.76in wide and 2.76in thick exterior dimension allows it to be used on any office chair, computer chair, armchair, wheelchair, car seat etc. *GREAT GIFT: Our reliable memory foam seat cushion is designed to help with relieve pain and is a great gift for people who have long sitting time and driving time and who suffer from sciatica, herniated discs, tailbone injuries, hip pain and hemorrhoids. * Note: * 1. Transition: 1cm=10mm=0.39inch * 2. Please allow 1-2cm error due to manual measurement. Please make sure you do not mind before you bid. * 3. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Brand: NEWHOME Product Type: Memory Foam Seat Cushion Material: Memory Foam Polyester Mesh Fabric Item Color: Black, Grey, Blue, Pink, Camel, Purple (Optional) Item Size: 44cm x 35cm x 7cm/17.32in x 13.78in x 2.76in (L x W x H) Item Weight: 543g/1.2lbs Packaging Size: 60x38x8cm/23.62x14.96x3.15in Packaging Weight: 550g/1.21lbs