What makes CIC-Thinsulat type B so important to a cold weather boot? Three descriptive words: thin, warm, light. Incorporating CIC’s microfiber technology, type B provides nearly twice the warmth of foam, felt, or pile, without the bulk and weight of thick layers, another quality that makes type B ideal for footwear is its durability to resist compression and maintain warmth under moderate pressures. Warmth while damp An additional advantage over foam and felt based insulation is the ability of type B to retain warmth when wet. The highly breathable material also allows moisture to escape and thereby improving wearer comfort. Dries quickly and easily. Technical data Usage: Footwear, General outerwear, sportswear, gloves and accessories