Mitten M's Scott Thermal ControlHigh IQR Moisture Wicking LinerHigh IQR Moisture Wicking Liner is an effective moisture management fabric system. It effectively absorbs moisture and spreads it over a large surface, accelerating the evaporation process to keep you dry during wear.PrimaloftPrimaloft insulation products offer superior performance for high quality cold weather gear. Primaloft is lightweight, breathable and is proven to repel water better than any other synthetic or natural insulation, so you remain dry, warm and comfortable even under the most extreme conditions. extremely light, allows greater freedom of movement ideal for use as both an external layer and an intermediate layerHiporaRHiporaR is a unique polyurethane insert technology consisting of numerous tiny placed all over the polyurethane coated film. The film shuts out water, but allows moisture from the body to transfer through to the outside. When the body perspires from strenuous work of exercise, perspiration can easily escape, allowing the wearer to stay comfortable.