Made of 1000D Cordura Nylon, its double reinforced stitching is very strong and will withstand drops ocasionales.Disponible in three different sizes, with a maximum capacity of 90 kg, incorporates an additional zipper and Velcro closure to ensure that the inner sand does not come out during training. Note: Not suitable for repetitive falls. Not allowed to be gripped on the flap. Not suitable for abrasive surfaces. Weight: 45 kg Dimensions: 40 x 18 cm Weight: 65 kg Dimensions: 40 x 28 cm Weight: 90 kg Dimensions: 40 x 40 cm