Those hotel sheets may look clean, but you're wise to be wary. (If they are clean, they still may have been washed in harsh, irritating chemicals.) Best bet: Pack a soft, luxurious, 100% silk Dreamsack in your bag (it stuffs into a 8 x 4 x 1" drawstring pouch). Keeps you cool and dry in the summer and warm when it's cold. A full 93" long and 34" wide, it has a built-in pocket for a pillow and a side opening that closes with tab fasteners. Easily machine washed, quick-drying.