Your walker is your key to mobility, so improving its functionality makes your life easier. And adding Glide Skis from Drive Medical does just that! Glide Skis are a great alternative to standard walker glides in that they are extra durable and provide smoother, quieter function. Simply install the Glide Skis on the rear tips of your walker and you'll experience the ease of gliding over most surfaces, indoors or outdoors. Durable, easy-to-clean and stylish.To size tip: Remove tip from shaft ; Place end of shaft on circle below ; If the shaft lines up with the circle, then enclosed tip is the correct size. Skis attach to rear legs only.It's solely the buyer's responsibility to choose the correct item. Please note our policies are set by the manufacturers we represent. No return will be accepted after 14 calendar days from the purchase date and without a valid RMA#. Returns are subject to a 15% restock fee plus the cost of outbound & inbound shipping costs. Any return request after the 14 day period will be decided on a case by base basis depending on the product & circumstances & is subject to a restocking fee up to 60%.Statements regarding dietary supplements have not been evaluated by the FDA and are not intended to diagnose, treat, cure, or prevent any disease or health condition.