Sneakers are flat-soled sneakers. Because they are shoes commonly worn by skateboarders, they are also called skateboard shoes. The main features are that the soles must have a cushioning function and do not necessarily have air cushions. The shoelaces have a protective design to prevent wear and tear. The toes are easy to wear and require very wear-resistant materials. The tongues are thick to protect the ankles. There are also many details on the insole, heel, and shoe lining. Various features are all for better sports effects and a more comfortable skateboarding feeling.