Men's Gentlemen GUNZE Pajamas Checkered Size: LL Color: Gray, Brown Material: 100% Cotton Flannel New Purchased this month from the official website, but I'm selling it because I already own similar pajamas. GUNZE men's long-sleeved pajamas. These pajamas are made with the underwear shop's commitment to quality, with a focus on materials, design, and sewing. The slightly thin flannel material is warm and comfortable.