These sheets are incredibly thin and seems to be of poor quality. I have owned many bamboo sheets like Quince & Cariloha, which have that luxurious feel. These do not. We own a Flex Top Split King Sleep Number and there aren't very many choices for that. The Sleep Number sheets have horrid reviews and I refuse to pay for them. I had high hopes for these, but I am disappointed. That being said, I only paid ~$60 per set, so I suppose for the price, it is to be expected. These should tide us over while I shop around for our go-to Flex Top Split King sheets, but these are most definitely not it.