Safety shoes are essential for workers in various work environments, providing protection against a range of hazards. They are typically made of durable materials that offer resistance to abrasion, impact, and puncture.

### Materials of Safety Shoes
Anti – smash safety shoes are often crafted from reinforced leather, polyester fiber, or composite materials. These materials are capable of withstanding impacts from heavy objects and preventing sharp objects from penetrating the shoes. Most safety footwear has smooth or nubuck leather uppers. Leather is a stable material that offers greater protection against the elements and hazards. Some safety shoes also feature textile or synthetic uppers like micro – velour, which are more breathable and suitable for hot conditions.

### Functions of Safety Shoes
The primary function of safety shoes is to protect the feet from injuries. They have a toe cap that shields the toes from being crushed. Safety shoes are also resistant to slipping, abrasion, and puncture. Many safety shoes come with puncture – resistant midsoles made from steel or Kevlar, protecting the feet from sharp objects such as nails and screws.

There are different types of safety shoes with specific functions. For example, S1P shoes have a protective toe cap, anti – static properties, and a puncture – resistant midsole, which is crucial in construction sites or areas with debris on the ground. S3 shoes include all the properties of S2 shoes (impact resistance, anti – static protection, and water resistance) and are equipped with a puncture – resistant sole and a high – grip sole, making them ideal for difficult and varied working conditions in sectors like construction, agriculture, and engineering.

### Selection of Safety Shoes for Various Work Environments
#### Construction Sites
On construction sites, safety shoes are a necessity. They can protect workers’ heels and toes from accidents, foot injuries, or being run over. Steel – toe shoes can also prevent employees from slipping on muddy or wet floors. Workers should choose anti – smashing safety shoes according to the protection level, anti – skid performance, and anti – puncture ability required by the construction site.

#### Airport
Airport workers face multiple risks. Handling heavy loads and the circulation of service vehicles increase the risk of musculoskeletal accidents, collisions, or crushed feet. Safety shoes for airport workers need to have anti – puncture soles and protective toe caps to provide rugged protection.

In conclusion, when selecting safety shoes, it is crucial to consider the materials, functions, and the specific requirements of the work environment to ensure maximum foot protection.