We have a craftmatic bed and they take XL twin fitted sheet. I got twin sheets, flat at WM. washed and laid on bed even on all 4 sides. Pinned 4 corners at 90 degrees. After I sewed them, I trimed them and then made casing top and bottom 1 foot from corner all around the end and other corner. Then I put elastic in and sewed it at both ends and a king flat sheet and I had sheets. If I buy to sets of XLT sheets I have to sew the top sheets together and they can be hard to find, usually when collage starts you might find some as that is size they use in dorm rooms.