Features: Made of clear silicone, soft and durable, not easy yellowing. Function: Prevents scratches and dents on umbrella pole caused by friction with the patio table. Reduces umbrella swaying caused by wind. Specification: Size: Inner diameter: umbrella rings: 1.65 inch, cap: 1.65 inch. Outer diameter: umbrella rings: 2.4 inch; cap: 1.85 inch. Suitable for: a 2 …