For adult beginners, the adjustability of roller skates is a favorable factor. Because everyone's foot type and size are different, the adjustability of roller skates allows users to adjust the comfort of shoes according to their own foot type and size to ensure the best sliding experience.

Some roller skates are designed to be adjustable in size, usually through shoelaces, insoles and detachable inner insoles. This design allows users to switch between shoes of different sizes, thus better adapting to different sliding scenes and styles. In addition, some adjustable roller skates provide extra support and stability to adapt to different foot types and skating skills.

But some roller skates are not adjustable, and this design is usually to keep the shoes simple and consistent in appearance. Fixed-size roller skates may be more suitable for some specific sliding modes and competitive competitions.

So if you need to slide for a long time or want shoes to provide better support and stability, you can choose roller skates with adjustable size. If you pay more attention to appearance and simplicity, or just experience roller skating for a short time, fixed-size roller skates may be more suitable. It is suggested to choose suitable roller skates according to personal needs and preferences.