Oh sure, there's legitimate function to these pants. Come winter's coldest nights, flannel pajama pants keep you warm. You could wear 'em under snow pants as insulation when needed. But just between us, Flannel Loungers are all about relaxing - a match for that favorite worn-out tee you like to wear around the house or late at night by the fire. They're made with highly shrink-resistant, double brushed 100% cotton flannel. Translated: SUPER SOFT. Even has our signature Crouch Gusset for extra ease. So just relax, bub.