Thank you for viewing. This is a MUJI men's long-sleeved pajama with no side seams, in dark navy, size M. (New, unused) Made with organic cotton, it feels great against the skin and is very warm! Details are as follows: - Brand: MUJI - Model Name: Long-sleeved Pajamas - Size: M - Material: 100% Cotton - Color: Dark Navy - Features: Organic cotton, double gauze Thank you.