Competition: we've teamed up with new Swedish bicycle accessory brand Bookman to give away five sets of their bicycle lights.

The Bookman Light is attached by simply stretching the elastic cord around the handlebars or seat post.

The product has a square plastic case, oversized rubber button and a groove to take the elastic cord.

Each set contains a white front and red rear light, with constant, slow flashing and fast flashing modes.

They come in yellow, green, blue or black.

This competition has now closed.

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Competition closes 20 September 2011. 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 are some more details from Bookman:

Stylish, luminous and pocket-sized. A slim, detachable bike light from Bookman, a Stockholm based company that makes accessories for bikes and people on bikes.

The first collection of colors includes: Lemon Yellow, Goblin Green, Heavenly Blue and Pitch Black.

The design idea was to use the simplest shape possible and let the colors do the talking. We began with a block shape and then added the few necessary functional elements; the curved underside, the oversized rubber button and the groove for attaching the elastic cord.
So here is Bookman Light designed to meet the modern demands of material and energy efficiency, but most importantly to look fabulous on your bike!

Package content:
1 front light (white LED) and 1 tail light (red LED).
3 modes:
Slow flashing, fast flashing and steady light.
Batteries:
2 x CR2032 in each light body.
To change the batteries, loosen the screws on the bottom.

Bookman Light works perfectly in all weather conditions.

Congratulations to the winners! Sophie Wren-Hilton and Michael Hobson in England, Skye Beach in the USA, Tom Robertson in Australia and Bácsalmásy Zoltán in Hungary all won a set of Bookman bicycle lights.