A neoprene immersion suit, also referred to as a survival suit or immersion survival suit, is a specialized protective attire designed to provide maximum insulation and protection in cold water environments. Constructed from neoprene, a synthetic rubber material known for its excellent thermal properties and flexibility, this suit offers superior insulation to help prevent hypothermia in icy waters. Neoprene's inherent waterproof characteristics ensure the wearer stays dry, and the suit's sealed seams further enhance its water resistance. Additionally, neoprene immersion suits often feature built-in buoyancy, aiding in flotation and increasing the wearer's chances of survival in emergency situations. 

These suits are widely used in various maritime and offshore industries, as well as for recreational activities in cold-water regions. They are crucial safety gear for crew members, offshore workers, and individuals engaging in water activities, providing critical protection and allowing for additional time during rescue operations. Regular maintenance and proper storage are essential to ensure the suit remains reliable and effective when needed to save lives.