These retention straps are designed with the series of Skillbuilders Full Support Swing Seats. Once attached, they help to limit the motion of the swing. Terrific for children just getting used to the sensation of swinging. Set of two. Works on swing seats with or without the pommel. Anchors swing seat to the ground. Integrates seamlessly with harnesses and straps. Will not interfere with attachment or use of headrest and leg rests. Adjustable, allowing you to determine amount of swing.