The VIAHART Heavy Duty Barrel Shaped Spring for Porch Swings, Free-standing Swings, Hammocks and Hammock Chairs | XL | Pack of 1 is manufactured by VIAHART to be of the highest quality and safe for its intended use and age range. If you are for any reason not satisfied with your purchase, simply return it within 30 days for a no-questions-asked full refund! And remember… VIAHART is all about Awesome Products at Amazing Prices!