Custom Backpacks, Havelock Clear Backpack - PVC & 15lb Capacity, Great for school campuses and quick security screening, the Havelock Backpack is made from clear and durable 0.22 PVC. It features a zippered main compartment, front slip pocket, two mesh side pockets, carry handles and adjustable shoulder straps and is suitable to carry a weight of up to 15 lbs. ... #KB3000 $17.20/each.