CYZ Men's 100% Cotton Flannel Plaid Pajama Pants 100% cotton Comfortable: Lounge around in absolute comfort with these pajama bottoms made from 100% cotton flannel. Feels soft and light against skin. Perfect for Sleeping and Lounging: If you're looking for some sleeping attire that has class then you've come to the right place. The CYZ pajama pants are soft, and extremely comfortable so you always get a good night's rest. These bottoms are also great as casual loungewear when you want to relax and do nothing all day long.