The high-quality and durable shoe block is made of plastic: Effectively relieves the pressure caused by tight shoes. Prevents hard leather shoes from chafing your feet. A great helper for people with swollen feet or knocking feet. The strong and thick ABC material extends the life of the shoe block. With its smooth and streamlined bionic design, the shoe block adapts to the upper material. Instructions for use (1) First insert the removable pressure relief plug into the appropriate hole as needed. Then insert the stretcher into the shoe. (2) Stretch length: Turn the round plastic handle clockwise until you begin to see surface pressure on the shoe. (3) Stretch width: Turn the metal crank clockwise until you begin to see surface pressure displayed on the shoe. (4) For best results, wait and leave the shoe in place for at least 24 hours. Yellow color Size: 39.0x4.5x6.0CM Quantity delivered: 2 pieces