New, unopened. I'm selling this because I haven't had a chance to wear it. It has been stored at home, so there are wrinkles on the bag. Please refrain from purchasing if you are concerned. ★Returns due to size differences are not accepted. HEATTRAP Sauna Shirt, Size M Perfect for training. - Brand: HEATTRAP - Size: JP M / US S [Explosive Sweat Sauna Shirt] HEATTRAP Official Heat Wrap Heat Shirt White Sauna Shirt Perspiration Sauna Odor-resistant Compression Inner Sauna Suit Tightening Men's Diet [Amazing Perspiration Power] Adopting a "polymer double structure," this shirt is specially designed to prevent outside air from passing through and to retain heat generated within the body. Compared to general sauna suits, it excels in "high airtightness and heat retention," promoting perspiration during exercise, which helps to eliminate excess water and waste products accumulated in the body, and is expected to increase basal metabolism. Also, because basal metabolism increases, it is recommended for those who do not usually exercise, those who do not sweat easily in daily life, and those who are sensitive to cold. [Excellent Elasticity and Durability] "Spandex" is an ultra-lightweight special fabric with elasticity, making it very light and easy to move in. It is also highly durable and can be machine washed. It reduces the burden of care, and the fabric does not deteriorate even with daily use, so you can use it for a long time. [Odor-resistant and Deodorizing Effects] "Nano-silver coating" is used. It has excellent odor-resistant and deodorizing properties, suppressing the growth of bacteria caused by sweat and adsorbing and deodorizing bad odors. It also has antibacterial and anti-mold effects, allowing you to use it cleanly for a longer period. You can use it without worrying about odors in daily life, and aim to increase your metabolism 24 hours a day.