What do closed shoes look like?

The opening of the shoe is closed, and the upper is made of elastic material. Sealed shoes mean closed sports shoes, which are characterized by a closed shoe opening, and the opening and closing function mainly relies on the elasticity of the upper material. The commonly used upper material is called "four-sided elastic", which is elastic in both the horizontal and vertical directions. It does not hinder putting on and taking off, and it also hugs the feet comfortably after wearing it. The opening of closed sports shoes is relatively small, and they rely entirely on the elasticity of the material to put them on and take off.