Upgrade your pajamas with a pair from Topman. Choose from drawcord or elasticated waist pants in flannel or cotton, for ultra comfortable pants that are warm yet breathable. Or for the ultimate in comfort, there's no beating an all in one pajama suit (extra points for the printed and novelty versions). slim-fit sweatpants are nightwear that can double as loungewear or work out gear, while printed silk pants are a must for a luxe take on nightwear. In the summer, look to light shorts in chambray that will keep you cool and comfortable no matter what the temperature.