Brompton Borough Waterproof Bag - Large

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The largest waterproof bag from Brompton, the Borough, with its subtle two-tone navy effect and multiple storage compartments, is great for keeping gear organised when you're on the go. 

Accessories delivery

We ship accessories Monday - Friday and aim to dispatch all orders within 2 days of receiving them. Free shipping orders are sent with Royal Mail and for bulky items, we may use DPD (at no extra cost).

Bikes delivery

In stock bikes are usually shipped within 14 days of you ordering as they undergo a Pre Delivery Inspection before dispatch. Bikes are delivered by DPD who provide a delivery window via text message on the day. Delivery of electric cargo bikes costs £40. This service is available to all mainland UK postcodes. Click and collect for electric cargo bikes is free.

Click & Collect

We can arrange for all items to be collected from store. For items other than bikes this usually takes 2 - 4 working days. Bikes can take up to 14 working days to be available. We’ll let you know when items are ready for collection. Please bring a form of ID and a bank card with you when you pick up your order.


We accept returns on orders up to 14 days after the items arrive with you. All accessory returns should be in saleable condition and be sent to our Hackney address with a note which has your name and order number on it. Refunds are processed within five working days.

International Shipping

International delivery charges are estimates and are subject to change. Please contact us for more information. Please note that international accessory deliveries will be handled via Royal Mail and sent ‘Delivered Duties Unpaid’ (DDU). You may have to pay import VAT (and customs duties, if payable) as well as a handling fee.

Product Description

Squeeze in as much as in as you dare - the Borough has an air release valve to help it pack down as small as possible when loaded on the bike - but if you have packed too much, an external load strap means you can lug a helmet or jacket around too. A bright orange liner is an obvious visual delight but makes rooting around in the bag for a favourite fountain pen much, much easier. The two rear pockets are independently waterproof from the main bag so you can stow a pair of soggy gloves away from a carefully prepared buritto. 

  • Dimensions: 43cm x 30cm x 18cm
  • Capacity: 25 Litres 
  • 100% waterproof
  • Compatible with all Brompton handlebar types
  • Two large rear pockets 
  • Detachable shoulder strap and extra load strap system
  • Aluminium hardware 
  • Air release valve
  • Padded 13” laptop sleeve & cable management pocket   
  • Glove-friendly zip pulls 
  • Webbing carry handle
  • Two-tone Navy colour

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