Whether a duvet is filled with down, feathers, or an alternative to the two, it should be lightweight, warm, and all-engulfing—the perfect environment for a deep, restorative sleep. Good duvets are expensive; they need to be protected.
It's surprisingly easy—and cost-effective—to make a customized summer-weight comforter cover from two new (or old) flat sheets. Just partner up different shades, or a plain linen with a patterned one, and straight-line sew the tops and sides together. For extra ease, forgo the usual button closures at the bottom and add grosgrain-ribbon ties. This simple, inexpensive cover will help to keep your duvet clean and will eliminate the necessity for a top sheet as well, which means your bed will be easier to make. And since a sheet duvet cover is so easy to make, why not sew a second, for laundry days, while you're at it?
Here's another Good Thing: To keep your comforter neatly in place, turn the cover inside out and sewing two pieces of five-inch-long fabric tape to all four corners. Then tie the fabric tape around each corner of the comforter, and sleep tight.