Cotton Imported Assist in Back Pain & Sciatica Relief - Ergonomically designed, provides support and comfort while reducing pressure on the tailbone with the U-shaped cut out and promotes healthy posture. Supports recovery from lower back problems, helps with most sitting pain due to sciatica, herniated discs, tailbone injuries, pregnancy, hip pain and hemorrhoids. Our seat cushion is designed to help relieve pain while sitting however it may not work for all conditions or completely eliminate all pain symptoms All-in-one Premium High Density Memory Foam Cushion - ComfiLife's all-in-one features are unrivaled: Non-slip rubber bottom, built-in handle for easy transport and machine-washable zippered velour cover for easy cleaning. Made with premium quality 100% memory foam. Product Dimensions: 17.5 x 13.7 x 2.8 inches Great for Office Chair, Driving and Traveling - Provides comfort on most hard surfaces; office chair, desk chair, kitchen, car seat, airplane, rocking chairs and wheelchairs. Great for office use, truck drivers, frequent travelers, sporting events and pregnancy. ComfiLife Seat Cushion may not fit perfectly some contoured car seats and large chairs. ComfiLife Coccyx Cushion will provide less support with increasing weight. For optimal support recommended weight is up to 225 lbs Our Customers Love ComfiLife Cushion - "I have already recommended this seat cushion to all my office mates that sit all day, as well. I love it, and some advice...Lock it up after you use it, or I guarantee one of your sneaky cube mates will swipe it!" -"This coccyx pillow has saved my life as one with lower back pain due to pinched nerve roots" -"I have herniated discs and sciatica for many years, this cushion allowed me to drive cross state with little to no pain" Fully Guaranteed - Customer satisfaction is our top priority, money back guarantee if you are not 100% satisfied, no questions asked!