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Buying guide: The truth about thread count
Don't play the numbers game. Quality bed sheets are about more than just the thread count. Discover how it really works and get your money's worth.
What is thread count, really?
Simply put, thread count is the number of threads woven into one square inch of fabric. This number is based on the threads woven horizontally ("weft") and vertically ("warp"). Extra threads can also be woven into the weft threads to increase the thread count. These added threads are called "picks" and are added in the overall count, which is how some sheets end up having thread counts in the thousands. This is why the idea that high counts equal better quality isn't really accurate. Consider this: Joanna says most weavers will say the maximum number of threads that can be woven into one square inch of fabric is 500 to 600. Though the number is arguable and, according to Joanna, "depends on the mill you deal with," it gives you an idea of where the line is between single-ply, unpicked weaves and ones that add threads here and there to bump up the count.