This elastic triangle bag is designed specifically for Brompton T Line.

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This elastic box fits perfectly into the triangular space of Brompton frame.  Weighing only 50grams, it provides an extra storage space of 320ml, allowing you to tuck in tools, a tire patch kit, gloves, and even a spare tire.

It is 3D printed with TPU plastic, an elastic and durable material. 

How to use: Fit from the top left corner first.

Note: This product is designed for T Line and is NOT compatible with other models. 

If you are buying this for A/C/P or pre-2022 models, please visit