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The dry suit is a form of exposure suit, a garment worn to protect the user from adverse environmental conditions.The two most common purposes are to insulate the wearer against excessive heat loss, and to isolate the wearer from direct contact with a liquid environment during immersion or repeated multi-directional contact with bulk liquids or spray.
Wetsuits for diving should be made from less compressible neoprene to keep their insulating qualities. [ 11 ] A wetsuit must have a snug fit to work efficiently when immersed; too loose a fit, particularly at the openings (wrists, ankles, neck and overlaps) will allow cold water from the outside to enter when the wearer moves. [ 13 ]
Diving helmets provide thermal protection and impact protection for the diver's head, and protect the diver's airway. Neoprene hoods provide protection against high volume sound, often produced by the breathing apparatus, but also from other sources. Gloves and boots serve similar functions underwater to those they provide at the surface.
A recent advance in neoprene for wet suits is the "super-flex" variety, which uses spandex in the knit liner fabric for greater flexibility and stretch. [25] [26] A drysuit is similar to a wetsuit, but uses thicker and more durable neoprene to create an entirely waterproof suit that is suitable for wear in extremely cold water or polluted water.
A scuba diving emergency is an incident while scuba diving, in which there is a high probability of death or severe injury if the problem is not resolved quickly. [133] A diving emergency may be related to life-support, [1] decompression stress and barotraume, [1] incapacitation or inability to cope, [134] or an acute medical problem. [116]
A glove is a garment covering the hand, with separate sheaths or openings for each finger including the thumb. [1] Gloves protect and comfort hands against cold or heat, damage by friction, abrasion or chemicals, and disease; or in turn to provide a guard for what a bare hand should not touch.