This is a PRADA short-sleeved shirt. It's a dark gray color typical of Prada, and the logo on the chest is moderately understated, giving it an easy-to-wear impression. I wore it a few times in the 2020 collection, but it's in good condition with no noticeable stains. The size is S, the second smallest size, and it's recommended for people around 170cm tall. It has a slightly boxy silhouette with a shoulder width of about 48cm and a length of about 66cm. It seems that men's clothing has recently been excluded from Mercari's safe authentication service, but authenticity is managed by RFC tags, so please check them if necessary.