Gorilla Playsets is known for their high quality, and affordable pre-box backyard playground sets and accessories. Using high quality materials is important to the longevity of the product, so that's why Gorilla Playsets use treated lumber, which prevents the onset of decay from termites, and fungi. br/br Their swing sets are also made for durablity with built in UV protection from fading and over heating in the sunlight. br/br Their products come with all the hardware needed to assemble their sets. Playsets come with assembly instructions as well.