Simplicity Extra Underpad, Disposable, 23 X 36 Inch, Moderate Absorbency, Blue, 1 Case of 150 Traction Firm polyurethane foam * The Hip Kits Firm polyurethane foam * The added height elevates the sitter making it easy to get into and out of chairs without straining The Knee Sling is a safe and easy way to improve mobility for those individuals that need to maintain non weight bearing of the lower leg or foot due to injury or surgery *The Knee Sling turns a standard walker into a knee walker *The Knee Sling comes fully assembled and requires no tools to install on your walker *The Knee Walker can be easily adjusted to accommodate any height *Can be installed on either side of the walker made from water resistant material for easy cleaning *Weight capacity 300 lbs *Attaches easily to any walker *Increases mobility makes standing easier *Soft foam knee pad *Tool free installation *Weight capacity 300 lbs *Made in the USA A diamond embossed pattern increases effectiveness Each bag contains 10 disposable underpads and each case has 15 bags