
BROMPTON
BOROUGH WATERPROOF - LARGE
$379.49
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
- PRICE MATCH GUARANTEE
BROMPTON BOROUGH WATERPROOF - LARGE | |
---|---|
SKU | 9023776 |
EXTERNAL MATERIAL |
600D TPU coated polyester with RF Welded construction (100% waterproof) |
DIMENSIONS | 30cm X 43cm X 18 cm |
CAPACITY | 25L |
FASTENING |
Roll Top with squeeze-buckle closures Twist-valve for air expulsion |
POCKETS | 25L main compartment, internal mesh pocket |
LAPTOP SLEEVE | Integrated padded sleeve in main compartment |
TRANSPORT |
Detachable shoulder strap with mesh pad Webbing Carry Handle |
MOUNTING | Removable Support Frame (FCF), Front Mounted Only on Brompton Carrier Block (FCB) - Not Included |
COMPATIBILITY | Low, Mid, and High Handlebars |
COLOUR | Navy |

Brompton is the only company we've seen that answers all three criteria - and believe us, we've tried every brand out there. The reason others can't compete is because Brompton has answered a fundamental engineering problem. If a bike is going to unfold to a large footprint (which takes the twitch out) then it is unfolding to a bigger bike - and by all logic, a bigger bike unfolded would be a bigger bike folded. So, it's pretty much true that for most folding bikes they either have great rideability but poor transportability or vice versa. And nearly all of them are a mess to fold.
Not Brompton. Brompton has designed the Platonic form of all folding bikes. The bike folds to the smallest size on the market, unfolds in a highly precise and easy manner, and has the same axle-to-axle footprint as a hybrid bike. How did they do this? By not only designing a clever frame, but also designing some 1200 proprietary parts that make everything fit - and fit perfectly. Oh, and nearly all of this is made in England. No wonder this bike has a cult following.

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