To use these slippers, simply slip your feet in. They're designed to fit true to size, so pick your regular shoe size. When walking, the 3' heel gives a bit of height and elegance. Be careful on slippery surfaces as the heel might make you a bit less stable. For maintenance, keep them away from water to avoid damaging the satin. You can use a soft brush to gently clean off any dust. Store them in a cool, dry place to keep them in good shape.