Snorkeling is the practice of swimming face down on or through a body of water while breathing the ambient air through a shaped tube called a snorkel, usually with swimming goggles or a diving mask, and swimfins. In cooler waters, a wetsuit may also be worn. The snorkel may be an independent item or integrated with the mask. The use of this equipment allows the snorkeler to observe the underwater environment for extended periods with relatively little effort, and to breathe while face-down at the surface.
A wetsuit is a garment worn to provide thermal protection while wet. It is usually made of foamed neoprene, and is worn by surfers, divers, windsurfers, canoeists, and others engaged in water sports and other activities in or on water. Its purpose is to provide thermal insulation and protection from abrasion, ultraviolet exposure, and stings from marine organisms. It also contributes extra buoyancy. The insulation properties of neoprene foam depend mainly on bubbles of gas enclosed within the material, which reduce its ability to conduct heat. The bubbles also give the wetsuit a low density, providing buoyancy in water.
Neoprene is a family of synthetic rubbers that are produced by polymerization of chloroprene. Neoprene exhibits good chemical stability and maintains flexibility over a wide temperature range. Neoprene is sold either as solid rubber or in latex form and is used in a wide variety of commercial applications, such as laptop sleeves, orthopaedic braces, electrical insulation, medical gloves, liquid and sheet-applied elastomeric membranes or flashings, and automotive fan belts.
A sleeping bag is an insulated covering for a person, essentially a lightweight quilt that can be closed with a zipper or similar means to form a tube, which functions as lightweight, portable bedding in situations where a person is sleeping outdoors. It is also commonly used indoors for people who do not have beds or at sleepovers. Its primary purpose is to provide warmth and thermal insulation through its synthetic or down insulation. It also typically has a water-resistant or water-repellent cover that protects, to some extent, against wind chill and light precipitation, but a tent is usually used in addition to a sleeping bag, as it performs those functions better. The bottom surface also provides some cushioning, but a sleeping pad or camp cot is usually used in addition to that purpose. The bottom surface of a sleeping bag may be moderately water repellent, but a plastic tarp or groundsheet is often used to protect against moist ground.
A dry suit or drysuit provides the wearer with environmental protection by way of thermal insulation and exclusion of water, and is worn by divers, boaters, water sports enthusiasts, and others who work or play in or near cold or contaminated water. A dry suit normally protects the whole body except the head, hands, and possibly the feet. In hazmat configurations, however, all of these are covered as well.
A zipper, zip, or fly, formerly known as a clasp locker, is a commonly used device for binding together two edges of fabric or other flexible material. Used in clothing, luggage and other bags, camping gear, and many other items, zippers come in a wide range of sizes, shapes, and colors. In 1892, Whitcomb L. Judson, an American inventor from Chicago, patented the original design from which the modern device evolved.
A diving suit is a garment or device designed to protect a diver from the underwater environment. A diving suit may also incorporate a breathing gas supply, but in most cases the term applies only to the environmental protective covering worn by the diver. The breathing gas supply is usually referred to separately. There is no generic term for the combination of suit and breathing apparatus alone. It is generally referred to as diving equipment or dive gear along with any other equipment necessary for the dive.
A spraydeck is a flexible waterproof cover for a boat with holes for the passengers' waists. Spraydecks are used to prevent water from entering the boat while allowing passengers to paddle or row.
A personal flotation device is a flotation device in the form of a vest or suit that is worn by a user to prevent the wearer from drowning in a body of water. The device will keep the wearer afloat with their head and mouth above the surface – they do not have to swim or tread water in order to stay afloat and can even be unconscious.
A flight suit is a full-body garment, worn while flying aircraft such as military airplanes, gliders and helicopters. These suits are generally made to keep the wearer warm, as well as being practical, and durable. Its appearance is usually similar to a jumpsuit. A military flight suit may also show rank insignia. It is sometimes used by Special Forces as a combat uniform in close quarters battle or visit, board, search, and seizure situations, for its practicality.
A pressure suit is a protective suit worn by high-altitude pilots who may fly at altitudes where the air pressure is too low for an unprotected person to survive, even when breathing pure oxygen at positive pressure. Such suits may be either full-pressure or partial-pressure. Partial-pressure suits work by providing mechanical counter-pressure to assist breathing at altitude.
A rubber glove is a glove made out of natural or synthetic rubber. The term 'rubber' refers to durable, waterproof and elastic material made from natural or synthetic latex. Rubber gloves can be unsupported or supported. Its primary purpose is protection of the hands while performing tasks involving chemicals. Rubber gloves can be worn during dishwashing to protect the hands from detergent and allow the use of hotter water. Sometimes caregivers will use rubber gloves during the diaper changing process to prevent contact with the child's fecal material/urine. Health professionals use medical gloves rather than rubber gloves when performing surgical operations.
The Sokol space suit is a series of soft-body pressure suits designed and built by NPP Zvezda. It was first introduced in 1973 for the Soviet space program following the Soyuz 11 disaster, and continues to see use in the modern day primarily by the Russian space program, being worn by space travelers flying aboard the Soyuz spacecraft. A version of Sokol is also used by the China Manned Space Program.
Waterproof fabrics are fabrics that are, inherently, or have been treated to become, resistant to penetration by water and wetting. The term "waterproof" refers to conformance to a governing specification and specific conditions of a laboratory test method. They are usually natural or synthetic fabrics that are laminated or coated with a waterproofing material such as wax, rubber, polyvinyl chloride (PVC), polyurethane (PU), silicone elastomer, or fluoropolymers. Treatment could be either of the fabric during manufacture or of completed products after manufacture, for instance by a waterproofing spray. Examples include the rubberized fabric used in Mackintosh jackets, sauna suits, and inflatable boats.
Waders denotes a waterproof boot or overalls extending from the foot to the thigh, the chest or even the neck. They are traditionally made from vulcanised rubber, but available in more modern PVC, neoprene and Gore-Tex variants. Waders are generally distinguished from counterpart waterproof boots by shaft height; the hip boot extending to the thigh and the Wellington boot to the knee. For the sake of emphasis, therefore, waders are sometimes defined by the extent of their coverage as thigh waders, chest waders or full-body waders. As a drysuit variant, full-body waders come with leaktight cuffs or gloves fitted to the sleeves and with a leaktight collar or hood fitted to the neck, enabling the wearer to remain dry when standing or walking in deeper water. Waders are available with boots attached or can have attached stocking feet, to wear inside boots, or inside swimfins in the case of float tube fishing.
A lifeboat or liferaft is a small, rigid or inflatable boat carried for emergency evacuation in the event of a disaster aboard a ship. Lifeboat drills are required by law on larger commercial ships. Rafts (liferafts) are also used. In the military, a lifeboat may double as a whaleboat, dinghy, or gig. The ship's tenders of cruise ships often double as lifeboats. Recreational sailors usually carry inflatable liferafts, though a few prefer small proactive lifeboats that are harder to sink and can be sailed to safety.
The Launch Entry Suit (LES), known as the "pumpkin suit", is a partial-pressure suit that was worn by all Space Shuttle crews for the ascent and entry portions of flight from STS-26 (1988) to STS-65 (1994). It was completely phased out by STS-88 and replaced by the ACES suit. The suit was manufactured by the David Clark Company of Worcester, Massachusetts.
A snowmobile suit is a suit designed to be worn when riding a snowmobile. It is often similar to a one-piece snowsuit but specially made to not just insulate against snow and water but also to protect the rider from the wind while riding. The design often draws inspiration from both motorcycle suits and ski suits.
A Thermal protective aid (TPA) is an aluminized polyethylene suit with heat sealed seams that protects from the elements and prevents hypothermia.
An exposure suit, or anti-exposure suit, is clothing intended to protect the wearer from an extreme environment. Depending on the environment and specific use the suit may be required to provide thermal insulation, buoyancy, and or complete isolation from the environment. The exposure suit may be a stand-alone unit, or may require undergarments to function correctly. The choice of undergarments may depend on the specific environment. A common use of the term refers to protection from cold and wet environments at sea. Depending on type, they may be worn during normal work, in emergencies, or when exposed to unusual conditions.
