Important Tips:
In the bags backpack system, it use quick-release webbing and plastic loops, it is smaller than a normal backpack. With the shoulder strap, the bag can carry a maximum weight of 7kg(15.4lb). it exceeds 7kg(15.4lb) in weight, the joints are overstressed and prone to unraveling and cracking. If mounted on bicycle, the bag can carry a maximum of 15kg(33lb).
it fit Brompton original carrier block(plastic) and TWTOPSE alloy carrier block. this item dont include carrier block.
We do not recommend the use of third-party carrier block, because we cant be sure if it uses the standard size. some carrier block uses a large size, this bag cannot be installed.
Most of carrier block is little loose design, function of the middle fastener is to prevent the bag from falling off, and its function is not to fix the bag.
About it:
I am the designer of this bag. At the same time, I am also a enthusiast of folding bikes. this Bag is newest 2022. When I cross the flyover, climb the stairs, take the subway or bus, if bag is installed on the bicycle and it is inconvenient to carry. Using the shoulder bag mode, it slips easily. So i add a backpack mode for it, which perfectly solves all problems. Usually I use this bag go to the shops, daily commute and weekend day trips.
Product Details:
Brand: TWTOPSE
Name: Bike bag for Brompton
Series: British Flag Bag series
Material: 1200D nylon
Size: Approx 13.5L (30*30*15cm)
Suitable for all handlebar types, S M P H handlebar