Say goodbye to the uncomfortable sheets and say hello to the ultimate in comfort! The TRUFit Sheets' unique construction enables them to fit tightly over mattresses of all sizes and shapes, even those with lower contours and deep edges. The sheets, which are made of cotton fabric of A-grade quality, have extra-wide elastic running along the margins and elastic sewn into the corner seams to keep them firmly in place and last for many moons. You will have a feeling of total ease since the sheets have been precisely tailored to fit both king and queen-sized mattresses.