The GT-18BP does everything a touring pannier should, then takes it further. Its rectangular shape holds more usable gear than 18 litres suggests, and full-length dual zippers open the bag wide so you're not excavating to reach the bottom. Multiple pockets keep your kit sorted, while the exterior mesh pocket takes a damp rain jacket without soaking everything else. A fully waterproof integrated liner protects the main compartment, and the patented Cam-Lock® system holds the bag rock-steady over washboard gravel and broken pavement. Then, when you roll into town or reach the airport, hidden shoulder straps deploy in seconds and the pannier becomes a backpack — no tools, no separate bag to pack. The straps tuck completely away when you're back on the bike. Hand-sewn in Quebec, built to outlast the bike it's bolted to. This is the same bag as the GT-18, with the added option of converting into a backpack. Verify that you have the right size of Cam-Lock Attachment for your rack To add another layer of waterproof protection, increase visibility and keep grime off your bags, buy an Arkel rain cover.