Big Feet PJs plaid flannel unisex footed onesie pajamas are a true classic! Our adult footed pajamas are available with or without a drop seat, butt-flap. These onesies are made of 100% cotton flannel and are double-brushed for added softness and comfort. Our footie pajamas for adults button up the front and have beathable no-skid non-slip soles. Choose from several plaid - tartan colors.