Secure your gear without rattling your roof rack using the Thule Chasm Bike Bag with dedicated InLock mounting.

Designed specifically for roof-mounted bicycle transport, this 25-liter courier bag bridges the gap between vehicle security and rider convenience. Instead of fighting a flapping backpack while navigating city streets, snap it onto your Thule roof basket or box and let the integrated detachable strap handle your essentials until you lock up.

• Engineered stability connects directly to Thule InLock universal interface panels so your payload stays perfectly centered and vibration-free during highway commutes.
• Constructed from 420D nylon treated with a phthalate-free laminate shell that actively deflects road spray, morning condensation, and sudden rain showers.
• Cleverly tucks the full-length crossbody strap inside a dedicated under-flap pocket when mounted, completely eliminating dangling hardware that risks snagging on brake rotors or spokes.
• Prioritized exterior access points place wallets, transit cards, and small tools within immediate reach without ever requiring you to detach the carrier bag.
• High-visibility reflective piping traces the bag’s perimeter for measurable driver recognition during twilight hours or poorly lit parking structures.
• Compartmentalized interior distributes weight evenly across the shoulder line, significantly reducing spinal strain compared to unstructured messenger designs.

Mounting requires a separate Thule InLock bridge plate compatible with your factory or aftermarket crossbars, ensuring zero interference with helmet locks or frame-mounted storage. The reinforced seam architecture and dense textile weave resist daily abrasion, keeping the profile tight through repeated loading cycles. Measuring 16.7 x 14.8 x 8.7 inches with an empty weight of 1.3 pounds, this bag maximizes usable cargo space while staying safely well below typical passenger vehicle roof load thresholds. Simply clip, unclip, and go knowing your equipment rides secure, dry, and accessible mile after mile.