Description
Brompton Borough Waterproof Roll Top Bag Large 25L
The Brompton Borough Waterproof Roll Top Bag Large Q103611 is a genuine Brompton 25-litre waterproof front bag in Navy, designed for commuting, shopping, touring and overnight rides. It combines generous carrying capacity with Brompton’s stable, quick-release front luggage system.
At 25 litres, Q103611 provides two litres more space than the Brompton WP Rolltop Large 23L. That extra capacity makes Q103611 the higher-capacity choice and helps explain its higher price of S$370, compared with S$315 for the 23L model.
Why choose the Q103611 25L waterproof bag
- 25L capacity: two litres more than the WP Rolltop Large 23L
- Durable TPU-coated nylon with RF-welded waterproof construction
- Adjustable rolltop closure for weather protection and flexible packing
- Internal padded laptop sleeve
- Two easy-access rear pockets
- Adjustable extra-load straps for additional storage
- Detachable shoulder strap and carry handle
- Quick-release mounting on a Brompton Front Carrier Block
Product specifications
| Capacity | 25 litres |
|---|---|
| Dimensions | 30 × 43 × 18 cm (width × height × depth) |
| Weight | 1.7kg |
| Colour | Navy |
| Product code | Q103611 |
| Main material | Durable TPU-coated nylon |
| Lining | 100% nylon |
| Construction | RF-welded waterproof construction, fully lined |
| Main closure | Adjustable rolltop |
| External storage | Two rear pockets and adjustable extra-load straps |
| Laptop storage | Internal padded laptop sleeve |
| Carry system | Detachable shoulder strap and handle |
| Mounting | Brompton Front Carrier Block required |
| Compatibility | All non-electric Brompton bikes fitted with a compatible Front Carrier Block |
Q103611 25L vs Brompton WP Rolltop Large 23L
| Feature | Q103611 Borough Waterproof Roll Top | WP Rolltop Large |
|---|---|---|
| Capacity | 25L | 23L |
| Price | S$370 | S$315 |
| Colours | Navy | Copper or Bronze |
| Best for | Maximum packing space, shopping and short tours | A newer, slightly more compact waterproof rolltop design |
Choose Q103611 when the additional two litres of capacity matters most. Choose the WP Rolltop Large 23L if you prefer its newer design, Copper or Bronze colour choices and more compact format.
Compatibility and mounting
This bag fits compatible non-electric Brompton bicycles using the standard front luggage system. A Brompton Front Carrier Block is required and may be sold separately. Brompton Electric models use a different luggage mounting system.
Complete your Brompton luggage setup
Browse the full Brompton bags and luggage collection or contact 808 Cycles for help choosing the right capacity for your bike and riding needs.
Frequently asked questions
What is the correct capacity of Q103611?
The Brompton Borough Waterproof Roll Top Bag Large Q103611 has a correct capacity of 25 litres.
What is the difference between Q103611 and the WP Rolltop Large 23L?
Q103611 holds 25 litres, which is two litres more than the WP Rolltop Large 23L. Q103611 is Navy and costs S$370; the 23L model is available in Copper or Bronze and costs S$315. Choose Q103611 for maximum packing space, or the 23L model for a slightly smaller, newer design.
Is Q103611 waterproof?
Yes. It uses TPU-coated fabric and RF-welded waterproof construction. Roll the closure correctly to protect your belongings from Singapore rain; the bag should not be submerged.
Does this bag require a Front Carrier Block?
Yes. Q103611 mounts to the front of a compatible non-electric Brompton using a Brompton Front Carrier Block.
Can I use it on a Brompton Electric?
No. Brompton Electric bikes use a different front luggage mounting system.
Will front luggage affect steering?
The bag mounts to the bicycle frame through the carrier block rather than hanging from the handlebar, helping keep the load stable while steering.
Buy from 808 Cycles Singapore
808 Cycles Pte. Ltd. is a Brompton Authorised Dealer in Singapore. WhatsApp 9820 8642 for stock, compatibility advice or collection enquiries.
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