A: plastic tube and slides: SK company imported LLDPE plastic powder, rotational molding Rotational Molding Compound, in line with European standards CE requirements, plastic wall thickness of 6mm or more, colorful, anti-ultraviolet (UV) capacity of 8, in line with Australian food class standards, antistatic ability, safety and environmental protection, good weather resistance, high strength. B: Platform: internal with firewood, thickness 2CM, tundish foam sponge (in line with the European CE standard) thickness 3CM, the outermost layer with PVC skin imported super flash leather, high strength, excellent safety performance, thickness : 0.5MM. www.qilongplay.com