The rectangle

Sewing a sheet is even easier. You just need to cut out the required length and width of the rectangle, turn up and stitch its edges. As a result, you will get a freely falling sheet, which during operation you will need to be refused in the mattress. But there is an option — this is a sheet on an elastic band. It is also not difficult to sew it. The most important thing is to correctly calculate the cut so that the sheet is well stretched on the mattress and does not hang out. Clearly measured fabric is bent, fucked, and the corners are placed, sewing an elastic band to them.