※Compressed Shipping New, Unused X-Shelter(R) Insulated β Long-Sleeve Shirt Size: 3L Color: Black Limited Production Less susceptible to cold air from the outside! Equipped with insulating material. XShelter Insulated β ●Product Features● Can be worn for a long season with the newly developed insulation sheet! ・Uses aerogel material for higher insulation ・Special multi-layer structure creates air layers, making it difficult for cold air to pass through ・Keeps you warm and insulated, wearable from chilly days to truly 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, higher insulation. Stretchy for ease of movement Comfortable & Stylish Long-Sleeve Shirt ・Side and left chest pockets convenient for storing small items ・Buttoned collar that can be closed to become a stand-up neck ・Rounded, round-cut hem ・Can be worn alone or as an outer layer, useful during seasonal changes Material Body: 100% Cotton Mesh part: 100% Polyester XW202 23203 Light-absorbing heat generation Military Workman