Pure Silk King Pillowcase - WhiteDETAILS Slip pure silk products are made using slipsilk. Specially commissioned and made to our exacting standards, slipsilk has been developed and refined for over ten years to provide the ultimate combination of shine, thickness, softness and durability. In laboratory testing, slipsilk was shown to absorb significantly less face cream and create 43% less friction, on average, compared to cotton pillowcases with a 220 360 thread count. Known for its