LED lights thread around the top rim of the Plum® 4.5ft Interactive Lights Junior Trampoline. The lights flash to match music and sounds using a built-in audio sensor. The trampoline has a low height frame, allowing your little one to easily climb on and of, and the enclosure is safe and secure with zips and clips. The trampoline has a galvanized steel frame with powder-coating to protect against rust. The trampoline is made from durable, waterproof materials.