A proper mosquito hat needs to have a wide brim to keep the netting away from your face and ears. At the same time, it provides excellent protection from the sun and light rain showers. The Nosilife Ultimate Hat II packs into a compact ball that easily fits into a suitcase, backpack, or side bag. The main material is recycled polyamide, and the netting is made from new polyester. - Cooling sweatband - Ventilation holes on the sides - Odor control treatment - Adjustable drawcord at the bottom of the net - S/M: 5557 cm - M/L: 5860 cm This product contains a Nosilife treatment with a plant-based active ingredient, *not* permethrin any more.