Close fitting, classic style hat made entirely from POLARTEC POWER STRETCH fabric is a rucksack essential. POLARTEC POWER STRETCH fabric provides excellent insulation with superb breathability. Comfort is excellent thanks to the 4-way stretch inherent in the fabric and ensures unrestricted movement. Close fitting style with deep hem that can be turned up to suit your preference. Flatlocked seams prevent rubbing and increase comfort when worn under cycling, climbing and other helmets.