The heavy duty is the most popular and most durable net that Pickle-ball® Inc. manufactures. It is weather treated for outdoor use and is ideal for the backyard Pickle-ball® courts or heavy institutional use. Made in USA Specs: - Durable nylon net - 5/16'' poly rope through 2'' white binding - Size: 21' x 30 with 1'' mesh Pickle-Ball Inc. PB-HDBON