World's first* insulation material. XShelter Wearable Insulation β Check the internal clothing temperature with a thermometer! Warm Climbing Pants Black 3L size Brand new, unused ● Product Features ● Can be worn for a long season with the newly developed insulation sheet! ・Uses aerogel material to maintain higher insulation ・Creates layers of air with a special multi-layer structure, making it difficult for cold air to penetrate ・Keeps you warm and insulated, wearable from chilly days to seriously cold days ・The insulation sheet itself is also stretchy, making it easy to move in What's the difference between α and β? ・α…Uses a thin and light insulation sheet. Excellent breathability, less stuffy ・β…Slightly higher heat retention, even higher insulation. Stretchy, so it's easy to move in Comfortable to wear & plenty of pockets ・Waist snap button and zipper front opening ・Adjustable belt loops with elastic waist ・Convenient pockets on the front and sides for storing small items ・Lightweight and smooth to the touch ・Versatile, from everyday wear to leisure activities Material Outer fabric: 100% nylon Filling: 100% polyester Lining: 100% polyester