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Brompton Borough Large Waterproof Bag - Navy

Brompton Borough waterproof bag - large - navy blue

Brompton Borough waterproof bag - large - navy blue

Introduced in 2020 - a classic roll top bag that's fully waterproof

Designed to give maximum capacity and functionality wherever your ride takes you

Made using Radio Frequency Welding, instead of stitching, making the bag completely impervious to water - perfect for those wet spring rides where the rain just appears from no-where!

Featuring an adjustable external load carry strap (making for easy access to helmets or jackets), padded laptop section and bright orange internal lining to help locate items quickly, this bag packs-it-all in, day in, day out

Choose this bag if you cycle big miles through all weathers. Pedal happy with peace of mind that your kit is safe and dry whatever the ride / weather throws at it

Brompton Borough waterproof bag features:

  • Capacity (litres) 25
  • Dimensions (cm) w43 x h30 x d18
  • Colour: Navy Blue
  • 600D TPU coated polyester
  • RF Welded Construction: 100% waterproof
  • Aluminium hardware
  • 2 large rear roll top pockets
  • Padded 13” laptop sleeve & cable management pocket
  • Detachable shoulder strap

Brompton compatibility:

The Borough waterproof bag is suitable for all handlebar types - unlike the old T bag it has a soft (rather than hard plastic) carry handle

We still recommend not over-filling it - else you could interfere with steering

This bag fits onto the standard front carrier block so is compatible with:

  • A Line / B75 (as long as a carrier block has been installed)
  • C Line
  • P Line
  • T Line
  • G Line

This bag is not compatible with Brompton Electric folding bikes - as the front carrier block is different (to accommodate the battery on the front of the bike)

We made this video comparing this Borough large waterproof bag against the Metro large waterproof bag and the now discontinued Ortlieb Brompton O-bag

Brompton 2020 Q part code: Q101578
Brompton Q part code: QBORBWP-L-NV
Brompton part number:  9023776