Shield springs and frame edges on a 15-foot trampoline with a universal spring cover featuring triple-layer construction. Tear-resistant Pvc top, 0.6-inch Epe foam cushioning, and non-slip Pe backing deliver 360-degree edge protection. Uv-treated surface resists fading and cracking in all weather conditions. Twelve heavy-duty elastic straps install without tools in 5 minutes. Folds to one-third size for compact storage.