We've got together with Paul Priestman of design consultancy Priestmangoode to give away five Waterpebbles, designed to reduce water consumption while showering.

The small device is placed in the bottom of the shower, where it measures and remembers the amount of water consumed during it's first use.

During subsequent showers, the Waterpebble uses a series of LEDs to indicate the volume of water being consumed relative to that first use.

With each use the device gives warnings earlier, encouraging shorter showers and saving water.

See the Waterpebble in action in the video above.

This competition is now closed.

Five winners will be selected at random and notified by email. Winners’ names will be published in a future edition of our Dezeenmail newsletter and at the bottom of this page. Dezeen competitions are international and entries are accepted from readers in any country.

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Here's some more information from Priestmangoode:

Waterpebble – your little water saver

Waterpebble is a revolutionary device designed to take the effort out of saving water as you shower. Designed by product designer Paul Priestman, Waterpebble is unique in the way it works to help reduce water usage.

The clever device monitors water going down the plug hole when you shower. Memorising your first shower and using it as a benchmark, Waterpebble then indicates, via a series of ‘traffic lights’, flashing gently from green through to red, when to finish showering. Each time you shower Waterpebble automatically fractionally reduces your shower time helping you to save water without needing to think about it.

“There is a huge imperative to use less water but it’s a difficult thing to quantify” says Paul Priestman. “I wanted to design something that takes the hard work out of going green and that helps people change their behaviour so that eventually they are doing it automatically. The Waterpebble has a mind of its own so that it literally does all the hard work and the user is gently persuaded to use less water”.

Paul Priestman is founding director of Priestmangoode, a multidisciplinary design group creating world class designs for leading airlines, train companies and hotels, and intelligent and inspiring design for everyday products and services.

Congratulations to our winners! Michael Luk in Canada, Vivian Lopez Ramirez in France, Rodrigo Vilas-Boas in Portugal, Tamara Ponomarenko in the UK and Tom Cole also in the UK.