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An air mattress is an inflatable mattress/sleeping pad.〔(Air mattress ) (definition on Princeton WordNet. Accessed 2008-08-10).〕 Due to its buoyancy, it is also often used as a water toy/flotation device, and in some countries, including the UK, is called a lilo ("Li-lo" being a specific trademark). ==For sleeping== An air mattress, also known as an airbed, is an inflatable mattress, the majority of which are usually made of polyvinyl chloride (PVC), although recently developed textile-reinforced urethane plastic or rubber versions exist. The deflated mattress can be rolled up or folded and carried or stored relatively easily, making them a popular choice for camping trips and for temporary bedding at home for guests. They are inflated either orally by blowing into a valve, or with a manual foot-powered or more commonly inflated via an electric pump. Some are even automatically inflating (up to a certain pressure—some additional inflation is also needed) just by opening the valve. The three main categories for use of air mattresses are camping, temporary home use (guests) and full-time permanent use (in the bedroom). Some air mattresses are specifically designed to perform both functions (camping and guest use) while others are specifically designed for one purpose alone (permanent use in the home or RV). Other air mattresses are designed in shapes with wheel well cutouts specifically intended for use in vehicles such as pickup trucks or SUVs. Lightweight, reduced-size and reduced-thickness air mattresses specifically intended for camping and backpacking are sometimes called sleeping pads, especially when a layer of foam insulation is added under the air chambers. Better quality air chambers, that are designed for permanent use in the home, are constructed of vulcanized rubber, covered in canvas or of polyurethane. These chamber(s) are then installed into a cloth shell or tick(ing). Permanent air beds will look almost like conventional beds with the exception of having a hose (one air chamber) or hoses (two air chambers) coming out of the head of the bed. These hoses will be connected to an air inflation device, with two outlet valves, that will have a remote control(s) so that each person can adjust the firmness of his or her side to his/her own exact needs. The firmness can be adjusted up or down, with the simple push of a button, on the remote(s). A USA government safety agency has warned against letting infants sleep on air mattresses, because they can be too soft and suffocate smaller children (especially those below the age of 8 months) within folds or while entrapped between the mattress and the bed base.〔(Deadly Danger: CPSC Urges parents To Not Place Infants on Air Mattresses ) (from the Consumer Product Safety Commission government website, United States. Accessed 2008-08-11).〕 Additionally there have been several recent governmental studies and regulations enacted due to the poisonous nature of the phthalate plasticizers contained within most PVC vinyl air beds and other soft vinyl products. The European Union has made similar efforts to prevent the use of vinyl materials in toys and bedding.〔(europa.eu/legislation_summaries/consumers/consumer_safety/l32033_en.htm ).〕 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Air mattress」の詳細全文を読む スポンサード リンク
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