The City Saddle bag is designed for any folding bicycle. Constructed from waterproof fabrics, it comes in two sizes to accommodate a range of gear, from clothing, to off the bike footwear, to tools. Both sizes are tape sealed and completely waterproof. The bag also comes with an extendable bottom strap which fits easily around the suspension block on all Brompton bicycles.

Seamless integration with the Brompton bicycle allows unhindered use of the folding mechanism without the need to remove any bags.