Our materials comply with SGS standards, ROHS certification and EN14960, waterproof and flame retardant. The PVC vinyl we use has high durability, high tear strength, anti-fading, anti-mildew treatment, excellent UV resistance, cold weather resistance, waterproof, anti-static, heat insulation, shading, anti-shrinkage, and fluorescence. For unsealed toys, use double suture and; Thin fabric webbing, "four-point" sewing, "four-thread double-stitch" and "adding reinforcement at the intersection of seams"; For sealed toys, use a welding machine to prevent air leakage.