The Windjammer Halo Beanie is constructed from a stylish merino wool and polyester blended knit on the outside and features an internal windproof GORE INFINIUM™ headband to keep your ears warm and protected in the coldest conditions. The Windjammer Halo Beanie has  been designed to be both lightweight, warm and able to protect you from the wind. To achieve this, Montane, have crafted the beanie with a blend of 50% acrylic wool and 50% merino wool. This is brilliant because merino wool, which is a high-performance material, will keep your head warm and aerated, whether it's 35 degrees celsius or minus 7. While the acrylic half, keeps that hat lightweight, so you can be assured that this hat will last you a long time. While its modern knit shape will mean that it fits on your head snugly and comfortably. The Gore Infinium headband lining makes this hat durably windproof and highly breathable. The combination of protection and breathability from this material minimises the wind's chilling effect while reducing the risk of overheating when you're being active whether that's out for a run, walk or climbing.