Rip Curl Backpacks - Rip Curl Posse Stacka Backpack - Navy :: Men > Backpacks. Front buckle fastening skate carry system Material: 100% Polyester Volume: 30 Litres Dimensions: 49cm x 37cm x 22cm Padded internal laptop section Large main compartment with zip fastening Top carry handle Rip Curl Posse Stacka backpack Breathable a mesh back system Adjustable and padded shoulder straps