Mabis/DMI healthcare Elevating Leg Rests, Blue by MABIS/DMI Healthcare. $20.38. Helps relieve knee, leg and back pain while helping to improve circulation. specially designed for knee elevation at a 30º angle. designed for treatment of phlebitis, varicose veins or tired legs. removable, machine washable, blue polyester/cotton cover. foam meets cal #117 requirements. size: 28” x 10” x 7.