Material is 100% viscose from organic bambooSTANDARD 100 by OEKO-TEX® certificate SH015 185006; made without the use of harmful chemicals or pesticides.Sheet Set includes: fitted sheet, flat sheet, and pillowcase(s) (1 standard included in twin size, 2 standard included with full/queen, 2 king included with king/cal king)Fitted Sheet Set includes: fitted sheet and pillowcase(s) (1 standard included in twin, 2 standard included with full/queen, 2 king included with king/cal king). Fitted Sheet Set does not include a flat sheet. This set does not include a flat sheet. If you prefer to sleep with a flat sheet, please see our Bamboo Sheet SetFitted sheet fits mattresses up to 16" deep and has elastic all the way aroundClean side opening on pillowcasesSilky soft and cool to the touchHypoallergenic300 thread countComplete your bedding refresh with new pillowsMade with care in China Bamboo Fitted Sheet Set