The Cortech Super-SP 12-15L Expandable Tank Bag is designed for riders who need increased storage capacity without sacrificing fit or performance. Built from durable waterproof 1000D Cordura® ballistic nylon with a DWR-coated outer shell, the Cortech Super-SP 12-15L Expandable Tank Bag is made to handle changing weather and demanding road conditions. Its semi-rigid design features EVA foam-backed reinforced side walls and a 3D-molded top lid for structure and stability while riding. A hidden expansion panel increases storage capacity from 12 to 15 liters, giving riders extra room for longer trips or additional gear. The waterproof main compartment uses YKK® Aquaguard zippers for improved weather resistance, while dual side pockets and an internal organizer system keep gear secure and accessible. A low-profile, angular shape helps optimize aerodynamics, and the included magnetic and strap mounting systems provide versatile installation options. Built-in hideaway backpack straps make carrying the Cortech Super-SP 12-15L Expandable Tank Bag simple once off the bike.