I don't know the purchase date, but I wore this shirt for ayu fishing. I didn't wear it very often. Product Description: This shirt uses a special synthetic fiber with hydrophilic groups that blend well with water, similar to natural fibers. It absorbs sweat and moisture on the fiber surface, quickly diffuses it, and evaporates it, providing a high cooling effect through evaporative cooling and the cool-to-the-touch sensation of heat conduction. Height: 172-178 cm Chest: 93-99 cm Waist: 79-85 cm Thank you.