This is a Fuji cashmere knit. It's a women's size, but I think it can be worn without any problems by men with a slim build. The seller is 171cm tall and it fits perfectly. Model: Height: 170cm Color: BLACK Material: Merino Optimo Wool 90% / Cashmere 10% Size 3: Shoulder width: 52cm / Body width: 53.5cm / Length: 62cm / Sleeve length: 51cm The following is quoted from the online site: High-neck knit made with Merino Optimo wool as a base and blended with cashmere. Merino Optimo is said to be found in only about 0.2% of all Australian merino sheep (about 2 out of 1000), and the spacing between the scales is wide and the height is low, which allows it to achieve a cashmere-like feel, and it is also used for innerwear. By blending cashmere with this Merino Optimo as a base, we have created a knit that is softer and more comfortable for relaxation.