The Cheerful Accessory You Love. Think blue with this 27" flexible plastic swing seat by Swing-N-Slide. The Blue Swing Seat by Swing-N-Slide features 58" zinc plated steel chain with blue vinyl coating for a comfortable and secure grip and also includes steel quick link connections for easy installation. The curved 27 inch oval design of the flexible seat supports up to 115 pounds when attached to standard duty swing hangers (not included) Add a bold pop of color to your swing set today!