• About Sizes. - Wide range of sizes: The Frog Foot inner diameter starts from 13mm, 14mm, 15mm, 16mm, 17mm, and 18mm; If not sure about the sizes, may check the video before choose.
• How To Install. - Pull out the original chair foot (the black plastic pieces), they may or may not gule on the chair's metal tube. Replace the original feet with the Anti-Sink Frog Feet.
• Design Features. - Anti-Sink feature for sand, beach, mud, grass, gravel, rock, and etc. Made of thickend plastic, and rubber; Durable and sturdy; Design for different outdoor activities, such as fishing, camping, hiking, traveling, picnics, and etc; May store them in the mesh sport bag, which comes with the Frog Foot.
• Caution. - Do not use these Anti-Sink Forg Foot on slipery surfaces, such as tile, wood floor, slippy cement floor, or any slippy slope. The chassis is made of nylon material