The sheets are soft and feel reasonably strong; the fitted sheet is very deep (about 18") which is great for my thick mattress. However the ad for the sheets only says they are made from "Rayon from bamboo", but the tag on the sheets themselves when they arrive say these sheets are "60% rayon from bamboo, 40% microfiber", which means 40% of the sheet material is actually plastics/polyester, NOT rayon from bamboo. Microfiber was not listed anywhere on the ad for these sheets. I think the ad should be corrected to reflect the microfiber content so buyers know exactly what they are buying. I bought the sheets on sale, but I would have been extremely upset to pay a full price for them and 40% is not even the material stated in the advertisement.