6 Piece Premium Bamboo Sheet Set, Deep Pockets, 50 Colors, 2200 Count, Soft

The item came up with a search for 100% bamboo. I reviewed every detail on the sheets and could not find what the ratio was ie 100% of 50% of 40%. I then assumed the best and assume they must be 100% bamboo, since it repeatedly calls them bamboo sheets and does not clearly stay that they are part bamboo and mostly rayon. They aren't even 40% and to boot the price reflected 100% bamboo sheets. Almost 70 $ I think 64 to 68. I was pretty close to keeping them because it's not worth returning but I was so uptight about non forthcoming description that I decided to make the effort. I originally chose these because of the colors the array of colors that they come in is extensive and the color was pretty nice. They felt soft they felt like a microfiber They seemed perfectly fine but they are not 100% bamboo. You can purchase microfiber for half the price with a decent quality. I do like their rich colors tho. My advice to the company is just be up front.