3M™ Futuro™ Comfort Lift™ Knee Support, Large, 1 Box of 3 Penlights Designed to help you listen Color:Yellow Designed to help you listen for hard to hear sounds including aortic stenosis S3 gallop murmurs and faint pulmonary anomalies Designed to easily fold to save space *Unit is only 10 wide when folded *Height adjustable from 28 to 41 *Fixed width dimension of 25 *1 ´ diameter stainless steel handrails for easy use and durability *Heavy gauge steel base plates uprights and fittings *Black powder coated chip and wear resistant finish *Each upright telescopes up in 1 ´ increments and locks into (10) height positions with fail safe ball tip locking pin *Weight Capacity: 400 lbs weak and injured knees Mild support level