IMPROVES WALKER GLIDE MOBILITY for any senior or movement-challenged person over time. Walker Balls use real tennis balls with premium grade felt, which glides optimally over doorways, sidewalks and carpets where other coasters get stuck.^ PRE-CUT STAR TOP OPENING for and UNIQUELY SECURE FIT - why risk injury or waste time cutting old balls. Our specially engineered cut pattern allows for much a better fit then any other walker balls on the market.^ PROTECT YOUR FLOORS FROM SCRATCHES - Unlike plastic walker glides, our custom cut walker balls set of 2 will never cause scuff marks, nor nick or scratch your precious hardwood, linoleum, or Pergo floors. Glide easily across most surfaces.^ CHOOSE YOUR STYLE and express your personality with not the same old boring yellow, blue or purple, but choose from four animal prints! (Zebra, Tiger, Cheetah, and Leopard.)^ SUPER EASY TOOL-FREE INSTALLATION - Easily slides onto 1 1/8" tubing of most walkers easier with no additional tools necessary. And, we use actual tennis balls, not cheap toys, allowing for maximum durability, to sustain long term use.