Condition: New with tags: A brand-new, unused, and unworn item (including handmade items) Size Type:Regular- Size S to 4XL [material description] 100% cotton [product performance] Reinforced round collar, neckline does not deform, printing mark is comfortable to wear, does not prick; firm more does not deform, fine needle and thread, basically no thread; sweat absorption, ventilation, does not shrink, does not deform, does not pilling. [applicable scenario] Daily, home, travel, group activities, activities, competitions, fitness, etc. [washing instructions] It can be washed by hand or by machine. Do not soak for a long time. Do not bleach. The temperature of washing solution should not exceed 45 ℃. [special notes] This size data is measured under the clothing tile. Due to different measurement methods, the error within 1-2cm is normal.