Flannel Lounge Pants. Just in time for those cold nights and days, plaid flannel lounge pant, with a fly front, to keep you warm and stylish. Assorted Prints, sold assorted, you pick the size, all beautiful flannel prints/styles. Sizes Small, Medium, Large & XL. Pajama pants for men or flannel sleep pants. Nice for just lounging around or sleeping in pajama bottoms aka men's flannel pajamas. Small 28-30 Medium 31-34, Large 36-38, XL 40-42 in inches. The length of the pants are approximately 43". Special low price!