Cooling sheets are made of Lyocell, bamboo (rayon) , linen, hemp or silk.[3]
A bolster pillow is a tubular pillow used for lumbar support while sitting up to read in bed, but more often, it’s used as a decorative pillow or accent pillow. These pillows range from very small to long version that span the entire width of the bed.

Linen:
What is a Bed Sheet?
SATIN Satin sheets can be made from a variety of materials including cotton, sink, polyester, or wool. This type of fabric tends to be of high quality due to its soft feel and shining appearance. Satin is also a great material for keeping warm throughout colder nights. The only downside is that these sheets can be hard to care for, and are not as durable as other varieties.