FUNCTION: Prevent painful blisters and stop wearing shoes that hurt Turn tight boots into fitting comfortable boots.(Suitable for ordinary boots) DURABLE BUILD: Made from tough polyurethane plastic & premium steel shaft, more durable than the wooden ones, these outstanding shoe stretchers can be used for years to come. Outer Material: Pvc Inner Material: pvc Sole: pvc METAL HANDLE:The metal handle is electroplated and rust-proof, smooth and sturdy, easy to use,and it will last longer. FREE GASKET:We also give away a set of gaskets that can be used to further increase the upper.Allowing you to stretch very small areas of your boots, letting you zero in on painful pressure points. 2PCS PACK: Package include a pair of shoe stretchers.Just insert the into the boots, and then turn the knob clockwise to begin stretching the Boots. Leave the shoe stretchers in overnight, or for 24-48 hours. The longer the shoe stretcher is inside, the more your shoes will stretch.