Rainbow Toys - 4Ft Trampoline, High Quality Kids Trampoline Fitness Exercise Equipment Outdoor Garden Jump Bed Trampoline With Safety Enclosure. The trampoline features a fully galvanized steel frame for better resistance to rust and corrosion, U-shaped big legs for better stability and safety, and a wear-resistant and anti-UV jumping mat made of PP. The safety enclosure net is closely connected to galvanized steel poles with foam sleeves, ensuring no gaps between the net and the jumping mat for maximum safety. The trampoline is easy to assemble with no special tools required.