The thread count of cotton sheets is one of the factors that contribute to their quality, but it doesn't solely determine the overall quality or feel of the sheets. Thread count refers to the number of threads woven into one square centimetre of fabric (counting both lengthwise threads "the warp" and widthwise threads "the weft"). It's a common misconception that a higher thread count always means better quality sheets. While a higher thread count can indicate a denser weave and potentially a smoother, softer feel, it's not the only factor. Many excessively high thread counts (over 800-1000) are manufactuerd using multi-ply threads (multiple threads twisted together) to increase the count, which impacts breathability and comfort. Other factors, such as the quality of the cotton used, the weave, and the finishing process, also significantly impact the overall comfort and durability of the sheets. Keep in mind when purchasing your sheets a lower thread count made of a better quality cotton will be a better long term purchase than a lower quality higher thread count sheet. Our suggestion - use price as a guide....if it appears too good to be true then it more than likely is. Read more about thread count here.