Follow-up discount available! We'll take 100 yen off if you leave a comment! Icebreaker Jacket Trainer - XS Size Full Zip Top Icebreaker Tech Trainer Color: Navy Size: XS Length: 60cm Width: 40cm Shoulder width: Approximately 35cm Sleeve length (裄丈): 78cm Soft to the touch Icebreaker's merino wool is a world-class super microfibre, with a fineness of 17 to 19 microns. The fibers are of very high quality, fine and soft, and gentle on the skin, so there is no itchiness like ordinary wool. 2. Moisture absorption and humidity control Merino, which has high moisture absorption properties in the fibers themselves, absorbs water vapor emitted by the body before sweating and releases it into the atmosphere. In addition, sweat from exercise is absorbed and vaporized by capillary action, so the skin is always kept dry and comfortable. Trapped moisture dries slowly, reducing chills caused by sudden temperature changes. 3. Ideal temperature regulation When it's cold, the heat of adsorption and body temperature when the skin absorbs moisture are stored in the many air pockets created by the ultrafine fibers. When it's hot, the gradual evaporative cooling of sweat allows for comfortable temperature regulation within the clothing. 4. Natural deodorizing effect Humidity inside clothing promotes the growth of bacteria, which causes unpleasant odors. Merino wool fibers have the property of absorbing and trapping unpleasant odors that cling to clothing, in addition to their moisture-releasing properties, making it less likely that odors will develop. Since it is also resistant to dirt, it can be worn for days without washing.