Material seems too thin to me as I can see the patterns of the mattress however the color is off white so that may attribute to it. What I'm having a hard time with is an area around one of the corners has large loose pills, look like they will be holes soon (first time using sheets, washed once using hand wash cycle, cold water and air dried). A shame, I believe this is a one off for the quality of the material used as the sheets seem to be well made, the curtains I ordered at the same time are outstanding.