This is a short-sleeved T-shirt from Earth Music & Ecology. The tag says "free size," but it fits like a size M, which is what I usually wear, so I think it's a size M. The sleeves seem to be a bit slim, so I think those who wear size S can also wear it. It's a black and white border. The back is designed to be a little longer. Please purchase with the understanding that this is a used item. #earthmusic&ecology #earthmusic&ecologytops #earthmusic&ecologyTshirt #earthmusic&ecologyShortSleeveTshirt #アースミュージック&エコロジー (Earth Music & Ecology) #アースミュージック&エコロジートップス (Earth Music & Ecology Tops) #アースミュージック&エコロジー半袖Tシャツ (Earth Music & Ecology Short Sleeve T-shirt) #レディースTシャツ (Women's T-shirt) #レディースTシャツMサイズ (Women's T-shirt Size M) #レディースTシャツSサイズ (Women's T-shirt Size S) #レディース半袖Tシャツ (Women's Short Sleeve T-shirt) #レディース半袖TシャツSサイズ (Women's Short Sleeve T-shirt Size S) #レディース半袖TシャツMサイズ (Women's Short Sleeve T-shirt Size M)