The Bell Ballistic comes in many colours and costs less than £70.
There are 15 vents to let air flow through the Evel Knievel-inspired lid and a clip strap keeps it on your melon.
Goggles fit well but the liner is non-removable - a pain when cleaning.
The helmet didn't move about while riding, but peak adjustability is limited and we struggled to make it stay in its highest setting. It's a little snug so try before you buy.