Shoe

A shoe is an item of footwear. Shoes may vary from a simple flip-flop to a complex boot. Shoes may have high or low heels, although in western cultures, high heels are considered a woman's style. Shoe materials include leather or canvas. Athletic shoe soles may be made of rubber.
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The earliest known shoe dates from about 7000 BCE and was found in California. However, the materials used for making shoes does not normally last for thousands of years, so shoes were probably in use long before this. Physical anthropologist Erik Trinkaus believes he has found evidence that the use of shoes began in the period between about 40,000 and 26,000 years ago, based on the fact that the thickness of the bones of the toes (other than the big toe) decreased during this period, presumably because going barefoot results in greater bone growth before this period
Parts of a shoe
Gluing a new outsole to an athletic shoe.
Gluing a new outsole to an athletic shoe.

Sole

The bottom of a shoe is named the sole.

Insole

The insole is the interior bottom of a shoe, which sits directly beneath the foot. Many shoes have removable and replaceable insoles, and extra insoles are often added for comfort or health reasons (to control the shape, moisture, or smell of the shoe).

Outsole

The outsole is the layer in direct contact with the ground. The material of the outsole depends on the function, dressiness, and quality of the shoe, but is generally very durable material, since it experiences the most stress. Dress shoes have leather outsoles; casual or work-oriented shoes have outsoles made of natural rubber or a synthetic imitation. The outsole may comprise a single piece, or may comprise separate pieces of different materials. Often the heel of the sole is rubber for durability and traction, while the front is leather for style. Specialized shoes will often have modifications on this design: athletic cleats have spikes embedded in the outsole to grip the ground; many kinds of dancing shoes have much softer or harder soles. These soles can be as hard as concrete, and very sturdy.

Heel

The bottom rear part of a shoe is the heel. These come in a variety of sizes and are usually made to support the large stresses applied to the heel of the foot. They are often made of the same material as the sole of the shoe.This part can be high to make the person look taller, or flat.

Vamp, or upper

Any shoe has an upper part that helps hold the shoe onto the foot. In the simplest cases, such as sandals or flip flops, this may be nothing more than a few straps for holding the sole in place. Closed footwear, such as boots, sneakers and most men's shoes, will usually have a more complex upper. This part is normally decorated or is made in a certain style to look fashionable and attractive for the buyer.