Shoe

A shoe is a piece of footwear typically worn in pairs to protect and comfort the human foot. Most shoes are designed specifically for either the left or the right foot.

While human feet can adapt to many climates and terrains, they remain vulnerable to injury. Shoes serve as a vital barrier against the environment. Some footwear functions as essential safety equipment. For example, steel-toe boots are mandatory at many industrial worksites to prevent injury.

Modern footwear varies immensely in terms of style, complexity, and cost. Basic sandals might consist of only a simple strap and a thin sole. In contrast, high-fashion shoes are created by famous designers using expensive materials and complex construction. These luxury items can sell for very large sums of money. Some shoes are engineered for specific activities, such as mountaineering or skiing. Others, like sneakers, have evolved from specialized sports shoes into general-purpose footwear.

Historically, shoemaking relied on natural materials like leather, wood, or canvas. Today, the industry increasingly uses rubber, plastics, and petrochemical-derived materials. The global shoe industry is a massive economic force, valued at $200 billion every year. However, this industry faces a major environmental challenge. Approximately 90% of all shoes end up in landfills. This happens because the various materials used in construction are very difficult to separate, recycle, or reuse.

Archaeologists have found evidence of very ancient footwear through various means. The earliest known shoes are sagebrush bark sandals from Oregon, dating to roughly 10,500 to 9,200 BP.

In 2008, researchers in Armenia found the world's oldest leather shoe. It was made from a single piece of cowhide laced with leather cord.

Another significant find was the footwear of Ötzi the Iceman from 3300 BC. His shoes featured bearskin bases and deerskin side panels. In Europe, the oldest plant-fiber sandals were discovered in Spain, dating to between 7,500 and 4,200 BC.

Some scientists believe shoes were used much earlier than these physical remains suggest. Footprints in South Africa show crisp edges and no toe marks, suggesting sandals were worn 73,000 to 136,000 years ago. Additionally, studies of human bones show that smaller toes became thinner between 40,000 and 26,000 years ago. Archaeologists believe this change happened because people were wearing shoes regularly. These early designs were likely simple "foot bags" made of leather to protect against rocks and cold.

Throughout history, shoes have functioned as powerful symbols of social status. In ancient Rome, footwear was a civilizational necessity that signaled power. Roman soldiers were issued chiral footwear, which featured different designs for the left and right feet. The height and complexity of a soldier's boot indicated their specific rank.

In ancient Greece, shoes could be highly decorative to indicate wealth. Courtesans wore leather shoes dyed in colors like lemon or yellow.

In the 1500s, Spanish chopines became popular status symbols. These shoes were remarkably high, reaching 7 to 8 inches.

Construction methods have also changed significantly over the centuries. During the Middle Ages, many shoes were made using the turnshoe method. In this process, the upper was sewn inside-out and then turned right-side out. Around 1500, the welted rand method began to replace the turnshoe method. This technique involves sewing the uppers to a much stiffer sole. This method remains the standard for high-quality dress shoes today. Some specialty footwear, such as certain dance shoes, still utilizes the traditional turnshoe method.