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Cycling shoe

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Cycling shoe

Cycling shoes are shoes purpose-built for cycling. There are a variety of designs depending on the type and intensity of the cycling for which they are intended. Key features include rigidity, for more-efficient transfer of power from the cyclist to the pedals, weight, a method of attaching the shoe firmly to the pedal and adaptability for use on and off the bicycle. Most high-performance cycling shoes can be adjusted while in use, via a quick-adjusting system that has largely replaced laces.

Modern cycling shoes are designed to work with clipless pedal systems. Such systems temporarily connect the shoe to the pedal in a manner similar to a ski binding system. The aim is maximal efficiency of power-transfer, using a cleat on the sole of each shoe and a matched fitting on the pedal. Several manufacturers produce such systems; consequently, modern shoes often have threaded holes in the sole in various arrangements to attach cleats of differing designs from different manufacturers.

Broadly there are two styles of clipless pedals, still referred to as “road” and “MTB” (mountain bike). Road pedals use a wide cleat, usually of hard plastic, which makes walking difficult (or, without care, hazardous) but gives good power transfer and is comfortable on long rides. A mountain-bike-style shoe uses a small steel cleat recessed into the sole of the shoe. It enables reasonable walking or running when dismounted.

The toe-clip and toestrap is an older system, still much used in one format. A toeclip is a metal cage attached to the front of the pedal into which the rider inserts the shoe. There are two methods for using pedals with toeclips. The first is a cycling shoe with a slotted shoeplate. Before the introduction of the clipless pedal, most racing shoes had a hard leather or plastic sole to which a metal or plastic shoe plate or cleat was attached. The shoeplate had a slot that fitted into the pedal. The shoeplate along with toeclip and strap keep the rider's feet firmly attached to the pedals. The drawback - a serious inconvenience in stop-start cycling - is that the rider has to reach down and loosen the toestrap by hand to take a foot out of the toeclip and off the pedal and for this reason toeclips with slotted shoe plates have been made largely obsolete by clipless pedals. The second method, still widely used, is to use a cycling shoe with a smooth sole or even a suitable non-cycling shoe. This had the disadvantage that the rider's feet are not firmly attached to the pedals (while nonetheless being constrained and supported) but had the advantage of allowing the shoe to slide backwards out from the toeclip and away from the pedals from the pedals without having to loosen the strap by hand. Some non-cycling shoes can be used, if compact enough to fit into the cage of the toeclip.

Soles for cycling shoes are usually divided into three categories. Inexpensive shoes mostly use an injection-molded plastic sole, which is economical but heavier and prone to flexing. Mid-range shoes may use a combination of plastic and carbon fibre, plastic and fibreglass, or an all carbon-fibre sole. All manufacturers' high-end competition level shoes manufactured post-2002 use carbon fibre soles. The sole material and amount of shoe tread used in a shoe affects its weight; an expensive pair of road shoes with carbon fibre soles can weigh as little as 400 grams, while a budget-priced pair of mountain bike shoes might weigh 850 to 900 grams.

Some mountain bike shoes have a little engineered frontal flex in the toe area forward of the cleat mount, and may carry a couple of studs, as used on the sole of football boots. This assists in walking and in climbing obstacles while carrying the bike. More expensive shoes usually have less frontal flex.

Cycling shoes come in numerous variants: road racing, track racing, winter, casual cycling, touring, off-road or mountain biking, and indoor cycling or spinning. Though many cycling shoe suppliers will have a conversion to American, British, French or even Japanese sizing, most cycling shoes are measured in European sizing. The available sizes range from European 35 to as large as 52. A few cycling shoe suppliers offer selected models wider than the standard "D" width. A small number of custom cycling shoe makers will tailor a shoe to a cyclist's exact foot size and shape.

These have a mostly smooth, rigid and inflexible sole, bent slightly at the ball of the foot. This, and the cleat attached to the shoe bottom, make a clicking sound when they come together and results in the waddle of the walking cyclist. These shoes are designed to function while the user is on the bike and little attention is paid to off-bike use. Most road shoes have a raised and generally different material from the outsole at the toe and heel to make stopping and short walks a little easier. Some road shoe outsoles have additional holes which are claimed to assist in ventilation. Quality can be measured by the shoe's fit, rigidity, durability, construction quality and lightness. Road shoes have molded holes with threaded inserts inside to allow for the attachment of an external cleat. Many cycling shoes use a three-hole system for attaching the cleat which is sometimes called a "Look pattern" after the company that popularized the clipless pedal in the middle 1980s. Lake, DMT and Sidi now offer a purpose designed, Speedplay pedal compatible shoe. These cleats attach to a clipless pedal making them even more unsuitable for walking. The 2010 price range for a road cycling shoe in the US is from $70 to over $450. Sizes available range from 35 to 52, with most companies offering sizes ranging from 39 to 46. Most companies offer models in European half sizes in the middle and largest selling size range, and a rare few offer shoes in wider than "D" width in limited models.

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