Knee Pillow Memory Foam Electronic Stethoscopes * Nellcor advanced signal processing Select Ear:Left Ear * Nellcor advanced signal processing technology delivers reliable operation even in difficult monitoring conditions * Designed for use on standard home beds * The rails can be easily raised and lowered with a push button adjustment * Fits most twin to king mattresses and also hospital beds * Dimensions: 58 Ergonomically designed to provide ideal spinal alignment to help reduce lower back leg hip ankle or joint pain * Sleeping or sitting can be difficult for those with back leg hip or joint pain * A knee pillow when placed between the legs keeps your legs hips and spine parallel and aligned* This results in improved circulation and decreased pressure and strain on those areas * The high quality memory foam reacts fast to provide instant relief and comfort and provides slow memory foam recovery for longer support * The removable soft polyester and rayon cover zips off easily for machine washing * Hypo allergenic * 10 1 2 L x 8 W x 7 3 4 H *