<P> A ski suit is a suit made to be worn over the rest of the clothes when skiing or snowboarding . A ski suit made for more casual winter wear outdoors may also be called a snowsuit (ˈsnoʊˌsut) and are often used by children as everyday outerwear in the winter season . Some suits are specifically made for snowboarders but most are used by either skiers or snowboarders regardless of the style . </P> <P> A ski suit can either be one - piece, in the form of a jumpsuit, or two - piece, in the form of a ski jacket and matching trousers, called salopettes or ski pants . A ski suit is made from wind - and water - resistant or waterproof fabric, and has a non-removable liner made of nylon, silk, cotton or taffeta . Its main function is to keep a person warm while participating in winter sports, especially Nordic (cross-country) or Alpine (down - hill) skiing . It is generally a unisex garment . A ski suit is meant to be worn with a base layer, which consists of long johns and a warm shirt, usually designed for skiing . Ski suits are often made of Gore - Tex or similar materials . They are often in the form of a shell suit, to which the skier adds more or less warm underwear depending on the weather . Pockets are usually made to be waterproof, so items put in them should stay dry . </P> <P> A one - piece suit cover the whole torso, arms and legs . They usually have one or sometimes two zippers down the front of the suit, sometimes additionally closed by a flap with velcro or buttons, and often have a belt at the waist . Sometimes, the suit has built - in suspenders on the inside for added support . One - piece ski suits are often just made as a shell layer, with the skier adding warm underwear of own choice adapted to the current weather situation . Other suits may be padded for warmth, but when intended for skiing they are still not as insulated as a snowmobile suit . </P>

What's the name of a one piece ski suit