3-IN-1 INSOLES

3-IN-1 INSOLES: A design of three-layered three-dimensional insoles that can be stacked together and placed inside the one-piece boot of inline skates.

In this way, users can manually adjust the internal space of the boot, allowing the inline skates to accommodate different foot sizes. This design enables the inline skates to be adjustable across three different sizes, enhancing the flexibility and adaptability of the inline skates, making them especially suitable for users whose foot size changes within a certain range, such as children and young people.