A noseclip is a small bent piece of wire covered in rubber worn by some swimmers (primarily synchronized swimmers). It is designed to clasp the nostrils closed to prevent water from getting in or air from escaping during activities such as synchronized swimming

Synchronized swimming

Synchronized swImming is a hybrid form of swimming, dance and gymnastics, consisting of swimmers performing a synchronized routine of elaborate moves in the water, accompanied by music....

. Some types of noseclips also feature a long band to keep the clip around the neck while it is not being used.

The nose clip is a vital piece of equipment for synchronized swimmers and is worn during training and competition. Although synchronized swimmers are not permitted to wear goggles during competition, the noseclip is allowed at all levels.

Noseclips are sometimes used in smoking illegal substances as a tool to allow the smoker to require lesser amounts of lung power when inhaling the smoke of the narcotics, and also aid in retaining the smoke or vapors in his/her lungs, as the fumes will not leak out of the nostrils when the noseclip is in use.

Some sorts of industrial oxygen rebreather (e.g. the Siebe Gorman Proto

Siebe Gorman Proto

The Proto is a type of rebreather that was made by Siebe Gorman. It was an industrial breathing set and not suitable for diving. It was made from 1914 or earlier to the 1960s or later. .Its breathing bag was worn on the chest...

) were sometimes used with a mouthpiece and a noseclip and separate eyes-only goggles

Goggles

Goggles or safety glasses are forms of protective eyewear that usually enclose or protect the area surrounding the eye in order to prevent particulates, water or chemicals from striking the eyes. They are used in chemistry laboratories and in woodworking. They are often used in snow sports as well,...

.