Kask Rex
£80
The close-fitting Rex has a compact design with an almost spherical appearance. On the trail, it feels light and well ventilated, and the thick, wide padding is supercomfy. The wide cradle at the rear adjusts easily but there’s a lot of side-to-side movement and the leather chin strap makes on-the-fly adjustment near impossible. There’s a ratcheted track at the back of the helmet for vertical adjustment of the retention system, but instead of keeping the lid securely in position, we found this allowed it to rotate forward and backward. This meant the Rex would drop down over our brow if we looked up while wearing a pack or a jacket with a hood. Also, the dual-position peak is too low for our liking in its lowest setting and feels like a windshield when set to its highest, goggle-stowing position.