Henley-neck long-sleeve T-shirt made from air-spun cotton with a length of about 13-33mm, mainly produced in the cotton-growing area of ​​the Mississippi River Basin in the United States. It is characterized by the rough texture and rough look that are unique to rice cotton. It features a design like a baseball uniform and a one-button specification that does not look like underwear.

From the 2011 Spring/Summer season, the design has been changed to 3cm in body width, 2cm in shoulder width, 2cm in length, and 1cm in sleeve length compared to the conventional JM5013.

The 77 Sumikuro colour button uses a black faded button that is different from the conventional one. The Henleyneck Longsleeve T-Shirt is loose and easy to wear.