T H E U N S E E N Choropleth Tote Bag

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On Earth Day 2018, Somerset House raised a flag which reflects the impact of pollution on the environment around Somerset House. Created by T H E U N S E E N, a material craft and innovation studio which started life at Somerset House, the Choropleth flag uses a chromic colour change compound developed by T H E U N S E E N, which reacts in real-time to ultraviolet (UV) radiation. 

As this tote bag is exposed to UV, a pattern emerges in yellows, greens and finally becomes a dark navy blue. Once removed from exposure, the pattern fades through pinks and reds back to clear.

These bags have been printed by hand by members of T H E U N S E E N using the same batch of ink as is printed on the flag, allowing you to take a piece of the flag home from Somerset House, and see how it fluctuates with pollution in the journeys that you go on.  

There are four tote designs available, featuring north, south, east, and west quadrants of London. Care instructions will be included in your package. 

This product is also available for purchase from the Somerset House Shop, East Wing, Somerset House. 

 Product photography courtesy of ADSHOT

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