If you sweat a lot during sleep, regardless of whether it’s caused by weather, hot flashes, or other conditions, our silk sheet can help wick away the excess perspiration, so your bed feels cool and dry in summer and never feels soggy in winter - and the best part? It’s all-natural. With a thread count per inch (TCI) of over 600, our 22 Momme flat sheet can easily withstand washing and drying processes that may cause damage to the 19 Momme sheet.