Features: 1. Adjustable width and length expander with 4 plug attachments and 6 holes for customized stretching. Fits both feet without left/right distinction, increasing shoe size by 0.5 to 1 size. 2. Easy operation: insert into boot, turn the length knob clockwise, then turn the width knob to widen. After 24-48 hours, shoes become more comfortable. 3. Made of durable, environmentally friendly plastic and high-grade steel. Smooth surface protects interior; waterproof and washable for long-lasting use. 4. Helps reduce discomfort from tight shoes, including pressure points and friction, making walking more enjoyable. 5. Compatible with various shoe types: hiking boots, work boots, casual shoes, sneakers, canvas shoes, and more. Product Details: Specifications: Color: Yellow. Material: Plastic. Suitable Shoe Size: Men's US 8-13, Women's US 9-14, Euro 41-48, Centimeter 26-31. Package Contents: 1 * Boot Shoe Stretcher.