High quality material: Adopt safe, environmental and high quality material The buckle is die-cast. All materials adopted are harmless to human skin, environmental and safe, and will not be allergic Wrist design conforms to ergonomics, strong and durable, moderately soft and comfortable to wear Wear-resistant, high temperature resistant, dimensionally stable, non-toxic, odorless, soft, non-cracked, non-irritating to skin New appearance, beautiful and elegant