Ergonomic designed and built for lower back support EASE your BACK PAIN in an INSTANT. This lumbar cushion is scientifically designed to provide relief to those suffering from BACK PAINS. Keep your back area COMFORTABLE due to its special contoured shape. You can use this back cushion almost ANYWHERE. In the office, at home, or on the go. Office chairs, car seats, wheelchairs, kitchen chairs, lounge chairs, vehicles, and THE LIST GOES ON. Memory foam filling for retaining shape and promoting healthy spine alignment Removable washable velvet cover. Strap on back to fit most chairs. Back Cushion measurements: Size: 12.6 * 12.2 * 4 inch (L x W x H) Memory foam provides the perfect amount of cushion and support while retaining it's shape and form. MEMORY FOAM IS HEAT WEIGHT RESPONSIVE: Firmness for all memory foam products changes with temperature. Your cushion will feel softer in warm weather and firmer in cold temperatures. Room temperature is ideal for optimal performance. It will provide less support with increasing weight Please allow your memory foam to air out. Our items come straight from the factory! Please remove cover and place in a well ventilated area to air out a couple of days. Additional Details ------------------------------ Product description: Ergonomic designed and built for lower back support EASE your BACK PAIN in an INSTANT. This lumbar cushion is scientifically designed to provide relief to those suffering from BACK PAINS. Keep your back area COMFORTABLE due to its special contoured shape. You can use this back cushion almost ANYWHERE. In the office, at home, or on the go. Office chairs, car seats, wheelchairs, kitchen chairs, lounge chairs, vehicles, and THE LIST GOES ON. Memory foam filling for retaining shape and promoting healthy spine alignment Removable washable velvet cover. Strap on back to fit most chairs. Back Cushion measurements: Size: 12.6 * 12.2 * 4 inch (L x W x H) Memory foam provides the perfect amount of cushion and support while retaining it's shape and form. MEMORY FOAM IS HEAT WEIGHT RESPONSIVE: Firmness for all memory foam products changes with temperature. Your cushion will feel softer in warm weather and firmer in cold temperatures. Room temperature is ideal for optimal performance. It will provide less support with increasing weight Please allow your memory foam to air out. Our items come straight from the factory! Please remove cover and place in a well ventilated area to air out a couple of days.