NO MORE TENNIS BALLS! Get Walker Skis! The ideal folding walker glide option for indoor and outdoor surfaces. Safe for wood floors and easy to clean.ADDS STYLE, SAFETY & MOBILITY to your folding walker and easily glides over door jams and small barriers.EASILY ATTACHES WITH NO TOOLS REQUIRED over metal tube of folding walker. Installs in just minutes.UNIVERSAL FIT for all folding walker makes and models with 1 1/8” tube shaft diameter.DURABLE & LONG-LASTING Walker Glide Skis are made of a special engineered Thermoplastic Polyoxymethylene (POM) - designed for strength, durability and maximum stability.