Snowmobile suit

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.

Snowmobile suits may be uninsulated shells(meant to be worn over a base/mid layer), or may be fully insulated.

One and two piece suits will also contain features such as sewn in/removable hoods, many internal/external pockets, storm cuffs at wrist, and ankle(to minimize snow/air intrusion), and internal or external draft stopping flaps over the zippers.

Suits will also contain safety features, such as the ability to keep the rider afloat, should they break through ice into water.

Most suits will have some amount of reflective material on them, to allow the rider to be visible at night, or in low light conditions.