Brompton Musette Bag
The Musette Bag has a myriad of uses – it’s intended to be your friend any time you need to carry just a little bit more. Or if you just want to travel light.
Based on the classic bag used to provide on-the-go provisions to professional road cyclists, it’s a lightweight style with an adjustable crossbody strap. It has expandable storage (up to XXL) and includes a number of useful internal and external pockets to keep things organised. And for an extra touch of usefulness when not in use, it can be easily rolled up and attached to your seat post or saddle rails using the integrated strap.
Features
Lightweight materials
Expandable volume
3x external pockets
2x internal mesh pockets
Adjustable shoulder strap
Packable design
Integrated strap to attach to bike
Printed logo
 
Some things are better when they fold.   
The musette has been helping cyclists carry a little extra for generations. This refined take on one rolls neatly around your seatpost, so it’s there when you need it and out of the way when you don’t. 
Unfold it and throw it over your shoulder when plans change. Roll the top down and fasten it closed, or leave it open and use the side cinch straps when you’re carrying more. 
Expanding from 4 to 6 litres, it handles everything from an extra layer to a stop at the shops. Built from recycled nylon with a water-resistant finish, it’s designed for regular use.