MOUNTAIN EQUIPMENT AEROFOIL FULL ZIP JACKET £100

This outrageously lightweight jacket (120g) is made from an Exolite 45 double weave soft shell fabric, which is wind-resistant, breathable and very stretchy. It’s ideal for climbing, alpine pursuits and fast hiking, according to Mountain Equipment. The close-fitting hood can accommodate a helmet when required and a single chest pocket doubles as a stuffsack.

VERDICT An ultralight, non-bulky windproof shell that’s great for 3-season hillwalking.