A new sun umbrella, the Vodafone Booster Brolly, is designed to keep you cool in the hot summer weather — and charge your phone at the same time. Flexible solar panels sewn into the umbrella create electricity while you’re out in the sun, and charge a battery embedded in the handle. Phones can be plugged into a USB port to charge.

Developed by Vodafone and scientists from University College London, the Booster Brolly went from concept to first prototype in only a month and a half. The current prototype will be revealed to the public this weekend at the Isle of Wight music festival in the UK.

In addition to charging phones and other USB devices, the umbrella’s solar power is also used to charge a micro-antenna and signal booster, helping phone users near the umbrella get the maximum signal strength possible for making calls or browsing the internet. (The catch: because the umbrella was designed by Vodafone, it boosts Vodafone’s signal, so if you have another carrier you won’t get this benefit).

The Booster Brolly also uses its solar power to charge an LED flashlight. Despite the umbrella’s many features — even including a phone holder in the handle, to make it easier to talk and stroll — it’s about the same size and weight as an ordinary umbrella. “It’s a bit of a James Bond umbrella,” said Kenneth Tong, the lead developer from University College London. “You can’t tell what it does from the outside.”

Main image credit: Vodafone

Secondary image credit: University College London