FUNCTION: Prevent painful blisters and stop wearing shoes that hurt. Turn tight boots into comfortably fitting boots. Suitable for standard boots. DURABLE BUILD: Made from tough polyurethane plastic and premium steel shaft, these shoe stretchers are more durable than wooden versions and built to last for years. Outer Material: PVC Inner Material: PVC Sole: PVC METAL HANDLE: The metal handle is electroplated and rust-proof, providing a smooth, sturdy grip. Easy to use and designed for long-lasting performance. FREE GASKET: Includes a set of gaskets to help expand the upper part of the boot. Ideal for targeting small areas and relieving specific pressure points. 2PCS PACK: Package includes a pair of shoe stretchers. Insert them into your boots and turn the knob clockwise to begin stretching. Leave the shoe stretchers in overnight or for 24-48 hours. The longer they remain inside, the more the shoes will stretch.