Topeak MTX Trunk Bag DX Deluxe rear rack mounted storage bag ideal for commuting General purpose bag or in conjunction with full panniers for touring 1 divided main compartment; two side zippered compartments Dupont Teflon coating for water and stain resistance 14.1 by 9.8 by 8.5 - 11.4 inches (L x W x H); weighs 2.25 pounds