Brompton Borough Waterproof Bag
Best high capacity storage for dedicated year round urban commuters.
A rugged, fully waterproof solution for all-weather commuters who need serious capacity. It trades lightweight minimalism for total weather protection and a secure, bike-mounted fit that keeps your gear dry and organized regardless of the forecast.
$359.99
More Borough options
Who it's for
- Commuters who cycle in unpredictable or rainy climates
- Daily riders needing ample space for work and gym gear
- Brompton owners prioritizing a stable and balanced ride
Who should skip it
- Budget-conscious cyclists looking for a more affordable storage solution
- Pedestrians who spend significant time walking with their bag
- Users who prefer dedicated compartments for small tech accessories
Performance breakdown
Weatherproofing
RF-welded seams and TPU coating create an impenetrable barrier against downpours.
Commuter Integration
The front carrier block system offers unmatched stability for Brompton riders.
Storage Capacity
The 25-liter roll-top design easily swallows daily essentials and bulky gear.
Tech Protection
Padded sleeve keeps your 13-inch laptop secure during bumpy city rides.
Off-Bike Versatility
Detachable strap makes for a decent shoulder bag, though lacks backpack ergonomics.
Build Durability
Rugged polyester construction is built to withstand years of daily abuse.
Key Specs
Weight
3.41 lbs
Material
70% Polyester, 30% TPU
Lining Material
100% Nylon
Capacity
25L
Dimensions
11.8 in x 16.9 in x 7 in
Waterproof
Yes
Laptop Compartment
Up to 13 inches
Closure Type
Roll-top
Intended Use
Commuting, Travel
Number of External Pockets
2
Know before you buy
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Ask Metto anything about the Brompton Borough Waterproof Bag before you decide.