Inspired by Jepe's Shiny SheetZ Bundle
these material presets for Poser will give you a new look for not just the sheetz but a whole bed or even clothing.
The materials come in a variety of fabrics and types to cover a wide range of moods, Casual cotton stripes and patterns with matching solids for everything from an everyday bedroom to every day clothing, heavy weave homespun for a medieval fantasy feel, latex for a different type of fantasy, and shiny satins with and without embellishment for more opulent scenes. There are also "overlays" that can be used on top of another material due to the two sided nature of the Sheetz or by themselves for a more mesh like effect. All of the materials can also be used on other surfaces like clothing or furniture.
*Bonus* 69 Material Presets to get you started using the Beyond Bedding shader presets with the ShineySheetZ by Jepe.