Comfort & JOY&reg; Warm & Cool Jumbo Pillowcases - Linen Driftwood Jade-infused yarns: cooler to the touch than cotton or microfiber products Rayon yarns made from bamboo and coconut yarns Natural elements for comfort and coolness Hollow yarn: wicking properties to keep you dry, cool and comfortable Warm side: Jersey knit polyester * For that warm feel