Generation: Product size: 39*13*5cm Color box size: 40*15*12cm Product weight: Box: 1700g Drawstring bag: 1552g 1 pair set Packing specification grids: 60*40*38cm12 pairs/carton gross weight 20.5kg Second generation: Product size: 37*13*5cm Product packaging: color box packaging 37*15*10cm 1280 grams Packing specifications: Color box packaging 14 pairs/box 60*40*38cm approximately 19kg Third Generation: Product material: ABS + nylon material + aluminum alloy Product color: black green Product size: One size fits all, suitable for US 5-14 EU 35-48 Product size: 44*15*13cm Product weight: Boxed: 1850g, Drawstring: 1550g Packaging size: Color box size: 45*15*13cm Packing specification grids: 54*48*48cm12 pairs/carton gross weight 23kg Children's version: Product size: 39*12*8cm Suitable Size: 32-40 Packing size: 39*14.5*12cm Product weight: Boxed: 1180g, Drawstring Bag: 1000g Packing specification grids: 60*40*38cm14 pairs/carton gross weight 18kg