This is a Patagonia Aloha shirt. The size tag is missing, so the size is unknown. I think it's around S-M. The same pattern was also available in Pataloha. Hawaiian print Aloha shirt made of organic cotton, featuring a surfing design. - Brand: Patagonia - Material: Organic cotton - Design: Hawaiian print (floral, surfing) - Color: Blue系 (blue-based) - Buttons: Black buttons Thank you for looking. patagonia, the north face, gramicci, mont-bell, wild things, Columbia, snow peak, champion, polo ralph lauren, LACOSTE, nautica, L.L.Bean.