Thread count is a measurement of how many threads there are in a square inch of fabric. It's calculated by adding the number of warp threads (vertical) and weft (horizontal) threads. For example, sheets with a “400 thread count” have 200 warp threads and 200 weft threads. Many people assume a higher thread count equates to higher quality. The idea behind this common assumption is that thinner and finer threads make the sheets feel soft and smooth. While this can be true, it’s not always the case. Many manufacturers use thread count as a marketing gimmick, equating a high thread count with high-quality sheets. To attract customers, some artificially inflate the thread count in order to create the perception of enhanced quality. Don’t fall for the thread count myth — higher is not always better.