This is a cotton check shirt from N.HOOLYWOOD. It's thin, so it seems like it can be worn all season, either as an outer layer or an inner layer. My family likes this brand, and they bought it at a store a few years ago. It's a blue check pattern. The blend is about half cotton and half Tencel. I'm also listing a black check shirt with almost the same design. It has been dry cleaned, but there are some minor thread snags, so please check the last image. I don't wear it much because I usually wear a suit for work, but I hope you understand that it is a used item. I will take waterproof measures and send it via Yu-packet or Nekopos. I steamed it when listing it, but please understand that there may be some fold wrinkles. N.HOOLYWOOD Mr. Hollywood Blue check long-sleeved shirt, size 38. - Brand: N.HOOLYWOOD - Color: Blue - Pattern: Check - Size: 38 - Style: Long sleeve shirt Thank you for viewing. Color...Blue系 (Blue-based) Pattern...Check