Get better traction on mud or snow with LLV interlocking jig-saw weights, a sensible solution to add weight to your LLV. When you fit the innovative, practical interlocking jig-saw postal weights together, they add substantial, well distributed weight to the back of your vehicle for added traction on snow and ice. Pieces are easily arranged and textured to resist sliding. If you find yourself on an especially icy patch, pop a plug and pour sand on the ice for added traction! Sand bags sold separately. Each specific polythylene case weighs 18 lbs. when filled, and measures 13 1/2" x 11 3/4". Ships USPS.