The Underseat storage bag fits perfectly in the space below the seat of Expedition and Skandic Widetrack and Super Widetrack models. The durable polyester construction is insulated to protect from cold while the integrated handles make removal and installation easy. Storage & Capacity Installs inside the 4 US gallon (15-liter, 915 cu in) underseat storage that comes stock on 20'' and 24'' models. 3 US gallon (11-liter, 671 cu in) capacity. Insulated to protect from outside temperatures. Integrated handles make transportation easy. Materials & Weather Protection Durable polyester construction.