This leg rest extension is designed to be used with the Large Skillbuilders Full Support Swing Seat. Once attached, the leg extension provides extra comfort and support. This is the leg rest only - Swing is sold separately. Works on swing seats with or without the pommel. Included webbing straps assist to keep legs secure and in place. Weighing only 5 lbs., it's easy to include this leg rest when you reposition or relocate the swing. The extension is easy to attach, arriving ready to be connected in just minutes. The contoured plastic design is solid, sturdy and easy to clean with soap and warm water.