【 Material Description 】 100% cotton 【 Product Performance 】 Soft and comfortable to the touch, slightly elastic, easy to wear and match, comfortable and fashionable, simple and practical, not easy to shrink, durable, fashionable and trendy 【 Applicable scenarios 】 Daily, home, travel, fitness exercise, etc 【 Target audience 】 Men [Washing instructions] Hand or machine washable, do not soak for a long time, do not bleach, and the temperature of the washing solution should not exceed 45 º C. [Special note] This size data was measured under flat clothing, with a chest circumference of 1/2. Due to different measurement methods, an error within 2-4cm is considered normal