The Topeak MTS TrunkBag DXP with Strap Mount offers massive storage capacity and rugged durability for serious cyclists. Its semi-rigid construction combines dual molded side panels and flexible 600 denier polyester reinforced with EVA foam, ensuring excellent weather resistance and long-term strength. The main compartment is divided and expandable, and the side panels unzip to increase total capacity to 22.6 liters for gear, clothing, or tools. A rear bottle holder keeps hydration accessible on long rides. Hook-and-loop straps securely mount the bag to any standard rear rack, and reflective 3M trim plus a safety light clip enhance visibility. With a shoulder strap, carrying handle, and bungee cord top, this bag is built for commuters and touring cyclists who need space, strength, and versatility.Expandable 22.6 L Capacity - Main compartment and side panels expand to carry tools, gear, or groceries, offering massive storage for daily commutes and long tours.Durable Semi-Rigid Build - Dual molded panels with 600D polyester and EVA foam create a tough, weather-resistant structure that protects contents in any condition.Secure Strap Mount System - Hook-and-loop fasteners attach firmly to most rear bike racks, providing a stable, reliable fit over rough roads or urban commutes.Hydration & Comfort Features - Rear bottle holder, carrying handle, and shoulder strap make it easy to stay hydrated and transport gear off the bike.Enhanced Visibility & Safety - 3M reflective strip, safety light clip, elastic bungee cord, and mesh pocket add organization and nighttime visibility.Manufacturer Sku: TT9643B2Todson Sku: 63009633