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  2. Vacuum mattress - Wikipedia

    en.wikipedia.org/wiki/Vacuum_mattress

    A vacuum mattress consists of a sealed air-tight (typically polymer) bag enclosing small beads (typically polystyrene balls) and fitted with one or more valves. While at ambient air pressure, the beads free to move, but when the mattress has been moulded and the air evacuated, external atmospheric pressure locks the beads in place ( jamming ...

  3. Mattress protector - Wikipedia

    en.wikipedia.org/wiki/Mattress_protector

    A mattress protector (also mattress cover, mattress pad may mean this or a mattress topper [1]) is an item of removable bedding that sits on top of, or encases, a mattress to protect it. Some mattress protectors also provide protection to the person sleeping on the mattress from allergens and irritants such as dust mites , bed bugs , mold , and ...

  4. Memory foam - Wikipedia

    en.wikipedia.org/wiki/Memory_foam

    A memory foam mattress is usually denser than other foam mattresses, making it both more supportive and heavier. Memory foam mattresses are often sold for higher prices than traditional mattresses. Memory foam used in mattresses is commonly manufactured in densities ranging from less than 24kg/m 3 (1.5 lb/ft 3) to 128kg/m 3 (8 lb/ft 3) density

  5. Vacuum bag - Wikipedia

    en.wikipedia.org/wiki/Vacuum_bag

    Vacuum bag may refer to: Vacuum packing of vacuum-sealed bags; Vacuum bag moulding; The dustbag of a Vacuum cleaner This page was last edited on 7 ...

  6. Sleeping pad - Wikipedia

    en.wikipedia.org/wiki/Sleeping_pad

    Since the pad and bag work together, a 'warmer' bag can compensate the a 'thin' pad and a 'thick pad' for a 'cold' bag. Highly heat-conductive surfaces (e.g. concrete, granite) [2] require more insulation for the same temperature than insulating ground surfaces (e.g.snow, dry moss, loose soil, wood, etc.). More heat is lost downward when ...

  7. Antistatic bag - Wikipedia

    en.wikipedia.org/wiki/Antistatic_bag

    An antistatic bag is a bag used for storing electronic components, which are prone to damage caused by electrostatic discharge (ESD). These bags are usually plastic polyethylene terephthalate (PET) and have a distinctive color (silvery for metallised film , pink or black for polyethylene ).

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