Safety First-16 FT Trampoline is equipt with 12 high safety enclosure poles and heavy gauge galvanized rust resistance steel construction. 6 W-shaped legs secure stability. Solid Structure-12 foam padded poles to support UV-proof safety trampoline enclosure net for maximum safety while jumping. Heavy duty 3-step galvanized steel ladder offers convenient maneuverability in and out of the trampoline. High standard, high specification- Our trampolines comply with ASTM F381-16 and ASTM F2225-15 Standard Safety Specification for Components, Assembly, Use, and Labeling of Trampolines. You can rest assured that our safety materials are among the best on the market for your family. 100% Satisfaction Service-One order gets all accessories .The specific assembly steps are shown in picture form which is easy for you to understand. This trampoline comes in 2 large boxes, if the box arrives damaged or parts missing, contact us and we will reply in time.