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Sandals include a variety of styles: flat bottom, slope heel, high heel, fish mouth, bandage, herringbone, toe cover and so on. It is mainly worn barefoot, and can also be matched with socks. Sometimes the difference between sandals and other types of shoes is not obvious, but it is generally believed that sandals expose most of the feet, especially the toes. These shoes are ventilated and cool, and some simple styles are even similar to slippers; However, sandals and slippers are not the same: the bottom of sandals is thicker than slippers, with shoe tails, more exquisite design and more materials, and they can be worn in public places such as schools and some enterprise posts. There are also various types of sandals, such as orthopedic sandals, casual sandals, recovery sandals, etc.

Sandals are usually worn in summer, but they can also be worn in spring and autumn. Now there are sandals specially worn in winter. In fact, wearing sandals out of season is not a taboo, or even a manifestation of avant-garde innovation; But when pursuing fashion, you also need to pay attention to temperature and body. It's best to add a pair of socks on your feet to keep warm. Due to the constraints of traditional concepts or the rules and regulations of major social organizations, some kinds of sandals are the same as slippers: they are not suitable for sports activities, solemn occasions, or jobs in some industries; However, fish mouth shoes and sandals with high heels can usually attend most formal occasions. Even this style of sandals once became a symbol of elegance and grace for working women. In a word, sandals have gradually become a fashion dress rather than a simple summer dress.

Shoelaces, also called shoestrings (US English) or bootlaces (UK English), are a system commonly used to secure shoes, boots, and other footwear. They typically consist of a pair of strings or cords, one for each shoe, finished off at both ends with stiff sections, known as aglets. Each shoelace typically passes through a series of holes, eyelets, loops or hooks on either side of the shoe. Loosening the lacing allows the shoe to open wide enough for the foot to be inserted or removed. Tightening the lacing and tying off the ends secures the foot firmly within the shoe. The laces can be tied in different shapes, most commonly a simple bow. Traditional shoelaces were made of leather, cotton, jute, hemp, or other materials used in the manufacture of rope. Modern shoelaces often incorporate various synthetic fibers, which are generally more slippery and thus more prone to coming undone than those made from traditional fibers. On the other hand, smooth synthetic shoelaces generally have a less rough appearance, suffer less wear from friction, and are less susceptible to rotting from moisture. Specialized fibers like flame resistant nomex are applied in safety boots for firefighters.

Flip-flops are a type of light sandal, typically worn as a form of casual footwear. They consist of a flat sole held loosely on the foot by a Y-shaped strap known as a toe thong that passes between the first and second toes and around both sides of the foot or can be a hard base with a strap across all the toes (these can also be called sliders or slides). Orthopedic flip flops are one of them. The modern flip-flop has a very simple design, consisting of a thin rubber sole with two straps running in a Y shape from the sides of the foot to the gap between the big toe and the one beside it. They typically do not have a strap around the heel, although heeled varieties are available, as well as flip-flops designed for sports, which come with added support common to athletic shoes, with the thong between the toes. Most modern flip-flops are inexpensive, costing as little as $5 USD, or less in some parts of the world. They are made from a wide variety of materials, as were the ancient thong sandals. The modern sandals are made of more modern materials, such as rubber, foam, plastic, leather, suede, and even fabric. Thongs made of polyurethane have caused some environmental concerns; because polyurethane is a number 7 resin, they can't be easily discarded, and they persist in landfills for a very long time. In response to these concerns, some companies have begun selling flip-flops made from recycled rubber, such as that from used bicycle tires, or even hemp, and some offer a recycling program for used flip flops.
Sports shoes are designed and manufactured according to the characteristics of people participating in sports or tourism. Different from ordinary leather shoes and rubber shoes, the soles of sports shoes are generally soft and elastic, which can play a certain buffer role. Exercise can enhance elasticity, and some can prevent ankle injury. Therefore, when carrying out sports, most people should wear sports shoes, especially high-intensity physical sports, such as basketball, running, etc. In addition, knit waterproof sneakers are also very popular.