Double size (137 x 191 cms) range of ultimate fitted sheets. This range has been manufactured without any compromise on quality. Standard sheets have 120 thread count, but this range uses a HUGE 200 THREAD COUNT. This ensrues the sheet will perform as new wash after wash. Also this tight weaving produces a smooth, crisp sheet which is smooth to touch. ULTRA-FRESH treated- ultrafresh inhibits dust mites which cause many allergies and also prevets bacteria and fungi growth. Thus the sheet stays fresh and clean day after day. 16" DEPTH- we have added a very genorous side depth to the sheet to ensure it fits around the mattress properly and thus doesn't "pull up" while sleeping.