Constructed of Syntek Leather with heavy duty water resistant and non-tear nylon lining with nylon web straps.Designed for heavy punching, including hooks and uppercuts.We recommend using a swivel on Fairtex punch bags which allows the bag to freely spin, increasing the life of the straps.Features: Designed for heavy hooks and uppercuts Long-lasting Syntek Leather Water resistant and non-tear nylon lining Nylon web straps. Height Diameter Weight 58 cm 50 cm 20 - 23 kg