Our aim is creating trendy and very unique sport accessories We do modifications testing trying to find a factory and a design that could be aesthetic Our backpack will be ideal from all with renewable durable and extremely strong patterns We design our products with easy setup and storage We value for our clients and encourage them with their passion Features . Polystyrene frame reinforced core cloth covered. A full set requires 8 grids however you can replace grids one at a time Specifications . Size 18 . Weight 1 45 lbs