Long-sleeved shirt made from a cotton and linen blend, offering a light and comfortable feel. Extremely comfortable. Versatile! Very useful. - Colors: Natural, White - Sizes: M/L - Materials: 55% Cotton, 45% Linen - Features: Pocket, Button-up, Long sleeves In the red circle in the 5th photo, there is a thin blue streak of about 1cm. I hadn't noticed it until now, but it was discovered during inspection. It's unknown if it was there from the beginning. Thank you for looking.