Designed to fit with most roof racks, this rugged cargo bag offers 15 cubic feet of cargo space.This product will be shipped directly from SportRack and will leave their warehouse in 2 3 business days. Eligible for UPS ground shipping only. . Durable construction for long lasting use. Made from water resistant nylon to help keep contents dry. Easy to attach to roof racks or raised side rails. 15 cubic feet of cargo 37 x 37 x 18 in.. Fits SportRack Roof Rack Systems, side rails, square, round and most factory racks. CLICK HERE FOR FIT INFORMATION.