The Captain America Shields All-Over Men's Pajama Pants are 100% cotton and have pockets! Because you need to be comfortable and also carry around some things, your phone, some candy, maybe some tissues cause you're watching Captain America Civil War and you can't understand why these crazy kids can't work it out?! Who knows? What you do know is the Captain America Shields All-Over Men's Pajama Pants are comfy and you should wear them.