Thread count is a measure of the coarseness or fineness of Hawaiian print fabric. It is measured by counting the number of threads contained in one square inch of fabric, including both the length (warp) and width (weft) threads. It is used especially in regard to cotton linens such as surfer bed sheets.
Thread count is a simple measure of fabric quality, so that "standard" cotton thread counts are around 150 while good-quality sheets start at 180 and a count of 200 or higher is considered percale. Extremely high thread counts (typically over 500) tend to be misleading as they usually use 'plied' yarns. i.e. one yarn that is made by twisting together multiple finer threads. For marketing purposes, a fabric with 250 yarns in both the vertical and horizontal direction could have the component threads counted to a 1000 thread count although "according to the National Textile Association, accepted industry practice is to count each thread as one, even threads spun as two- or three-ply yarn.
The Federal Trade Commission agrees and recently issued a warning that consumers 'could be deceived or misled' by inflated thread counts." Dean Miller's beach bedding has never miss-lead or tried to deceive any of its consumers, and has always clearly stated that our cotton percale surf sheets are a high quality 200 thread count.