Anti-smash safety shoes are designed to protect the feet from various injuries in different working environments. The design and materials used in these shoes play a crucial role in their functions.

### Design
The soles of anti-smash safety shoes are carefully designed. They are typically made of wear-resistant rubber or polyurethane, which provides excellent slip resistance and puncture resistance. Slip resistance is a very important function as it can help prevent slips, trips and falls. The most common slip-resistant soles are made of rubber with an additional layer of granular materials such as quartz or silica that provide extra traction. Some models even have steel midsoles that prevent sharp objects from penetrating the sole and injuring the feet.

### Materials
Anti-smash safety shoes are made of durable materials. They are usually made of reinforced leather, polyester fiber, or composite materials. These materials are resistant to abrasion, impact, and puncture. They can withstand impacts from heavy objects and prevent sharp objects from penetrating the shoes.

### Functions
The main function of anti-smash safety shoes is to protect the feet from injuries. They have a toe cap that protects the toes from being crushed. The shoes are also made of materials that are resistant to slipping, abrasion, and puncture. Additionally, some safety shoes have a protective plate in the sole that protects against electrical shock and provides insulation against cold floors or extreme heat.

In conclusion, anti-smash safety shoes are essential for workers in many industries. Their well-designed soles, high – quality materials, and multiple functions ensure the safety of the feet in various working conditions. However, it is important to choose the right – fitting safety shoes to avoid potential foot problems.