Most single bed bedsheets are either too short or too thin and at a small size, both problems show immediately. A good single cotton bedsheet starts at 60 x 90 inches in 100% pure long-staple cotton. Breathable for Indian summers, soft enough for daily skin contact, and easy to wash at home without special care. Handloom cotton at 245 GSM lasts 2 to 3 years under weekly washing the budget option needs replacing in six months. Get the size right, get the fabric right, and it works every night without adjusting or tucking in corners by morning.