Pure Core Collection Sheets are made of fine sateen and convey a soft and natural sleep sensation. Keep it luxuriously soft when the temperature of the storage area is between 18°C and 22°C. Avoid exposing the sateen to sunlight, fold the satin and put it into our breathable canvas bag, and store it in a dry and ventilated place. Avoid contact with odors, sateen is easy to absorb odors, and storage needs to avoid contact with tobacco, perfume, and other strong-smelling items. Turn them regularly, take out the sateen for inspection every quarter, and gently tidy up their folds to avoid marks left by long-term folding. Pay attention to storage time, even if it has been properly stored, sateen will become fragile over time. We recommend replacing every two years.