Halfords Advanced All Seasons Car Cover

Best price: £49.99

While we focused our test on indoor covers, this Halfords version is also good for outdoors and claims to be fully waterproof while remaining breathable. We saw some weight gain in the kettle test, but it was a long way behind the indoor specialist products. It uses a similar stiff material to the Supertex cover, so the fit is compromised, but there are useful securing straps and strong elasticated ends. It was also one of the most effective against knocks.