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A shoe stretcher is a device that’s made to wedge down into a shoe. Typically, they have a knob or a lever that you turn to gradually widen and lengthen the shoe stretcher. Over time, this will help relax and widen the shoe, making them up to a half-size larger.  You can buy a shoe stretcher at most high-end shoe stores. Try this in conjunction with a shoe-stretching spray for the best results. Dampen the shoes with the spray, then insert the shoe stretcher. Repeat this as needed until your shoes reach the size you need. Take a sock and roll it up tightly from the toes all the way to the top, then stick it down into the toe box of the shoe. Continue doing this until you’ve filled both shoes completely with as many socks as you can fit. Then, store the shoes overnight or until you’re ready to wear them again.  While this method might not work as quickly as using heat, alcohol, or ice, it will gently stretch your shoes over time, making it an ideal option for leather, vintage, or otherwise delicate shoes. This may not work as well for shoes with a stiff upper, like dress shoes. Also, shoes that are made from a flexible material, like mesh, might require direct heat or a method that saturates the shoe in order to stretch out the fibers. Dampen a few sheets of newspaper, then ball them up and stuff them into the toe box of the shoe. Continue adding balls of wet newspaper until the shoe is full. As the paper dries, it will expand and harden, stretching out the shoe.  Because this technique will form the shoe as it stretches, be sure to arrange the paper so it preserves the shape of your shoe. Do not saturate the paper, or it could damage the inside of your shoe. Also, avoid using this technique on leather shoes. Fill a plastic bag with oatmeal, rice, or any other grain that will swell up when it gets wet. Add just enough water to cover the grains, then seal the bag and place it into the shoe, working it down into the toe box. Leave the bag in place overnight, then remove it and try your shoes on! As the oats expand, the pressure will help stretch the material of the shoe.
Use a shoe stretcher to gradually widen leather shoes. Roll up socks and stuff them into the toes of the shoes for a gentle stretch. Place wet newspaper into the shoes for more stretching power. Stretch the shoe with wet oats, grains, or rice for an old-fashioned approach.