The Brompton Borough Waterproof Bag - Large is a robust companion that protects your things come hell and high water. Modelled after the Borough Roll-Top, it has a slightly smaller capacity but the huge added benefit of 100% waterproofing thanks to Radio-Frequency welded construction in place of traditional stitching.

A large messenger style bag with a roomy 25L capacity, the Borough Waterproof has a large main compartment lined with orange nylon to make it easy to locate essentials quickly. A padded laptop sleeve and zippered mesh internal pocket keep things organized, while the two roll-top pockets on the rear of the bag offer space for water bottles or wet gear. The roll top closure with squeeze-buckle closures keeps water out while allowing for flexibility when you need to carry a little extra, and the twist-valve expels air during compression for a compact svelte look. The aluminum slide clip connected to webbing on the front allows you to strap a helmet or raincoat to the outside of the bag. A reflective 3M patch on the front provides visibility on dark nights or in stormy commutes.

• Genuine Brompton Accessories
• Brompton Borough Waterproof - Large
• Roll top provides tons of internal storage space, plus a little extra room if needed
• Constructed using Radio Frequency Welding instead of stitching for 100% waterproofing
• Laptop sleeve, internal pocket, and 2 roll-top pockets for bottles or quick-grab items
• Padded nylon shoulder strap helps you carry heavy loads comfortably off the bike
• Squeeze buckle closure keeps your things dry and secure
• Front straps secure helmet or coat to front of bag during transport
• Reflective 3M patch for nighttime visibility
• 25 Litre Capacity
• Front Mounts only on the Brompton Carrier Block (FCB) - Not Included
• Compatible with all handlebar types