Fitting on to the wheels of your bike, Revolights offers a variety of lighting options, including a smart brake light that senses when you are slowing down and a legal headlight. These are powered by rechargeable battery packs that can be removed and charged over microUSB.

However the starring feature of the pack are four narrow LED rings – two white, two red – that are attached to the wheels. The lights shine out in front of the tyres, lighting your way, and an integrated accelerometer means the lights will only illuminate when they are oriented at the front and rear of the bike.

You can snap the lights on to your wheels – Revolights Skyline – or buy a set with the Revolights installed, which is more expensive. They are theft and weather resistant too (unless the wheel can be removed). And as an added bonus, they look really, really good. revolights.com