What is the easiest way to stretch shoes?
Unfortunately and unlike leather, synthetic material does not stretch, so do not expect too great a result. You may try to buy and keep inside the shoes a ¨shoe tree¨ when you are not wearing them. A shoe tree is an adjustable contraction you put inside shoes to keep their shape and also stretch them a bit lengthwise. You could buy them where they sell shoes and also where they repair shoes. They have metal and cedar type ones. By the way, until you buy the shoe tree you could pack crumbled newspapers inside the shoes. Good luck!