Trunk Bags

About

Key Features to Look For Trunk bags come in a wider range of sizes, configurations, and materials than most riders expect. Knowing what to look for helps you choose one that actually fits your rack and your routine. Capacity and Size Smaller trunk bags in the three to five liter range work well for commuters carrying a wallet, keys, a lock, and a light snack. Larger bags in the ten to fifteen liter range give touring riders room for a change of clothes, tools, food, and electronics. Think about what you plan to carry on your longest typical ride and size up from there rather than trying to compress into something too small. Mounting System Most trunk bags use a combination of hook-and-loop straps or rigid mounting hardware to attach to a rear rack. Some bags clip directly onto rack rails with quick-release buckles that allow fast on and off without tools. Make sure the bag you choose is compatible with the rack you are running, as sizing and rail spacing varies between brands. Waterproofing Fully waterproof bags use welded seams and waterproof zippers to keep everything dry even in sustained rain. Water-resistant bags shed light moisture but will eventually soak through in heavy conditions. If you ride in mixed weather or commute year-round, proper waterproofing is worth prioritizing. Otherwise, a water-resistant bag with a rain cover can serve most riders adequately. Organization Interior dividers, zippered pockets, and key clips help keep smaller items from migrating to the bottom of the bag where they are hard to find. A separate external pocket for items you access frequently, like a phone, snack, or sunglasses, saves you from digging through the main compartment at every stop. Reflectivity and Visibility Many trunk bags include reflective panels or piping that improves your rear visibility in low light. This is a small but meaningful safety feature for commuters and anyone riding into or after dark without a dedicated rear light mount on the bag itself. Expanda