Pug In Life Jacket

PFDs are available in different sizes and different designs purposed for various levels of protection.
The University of Victoria in British Columbia (province) Canada pioneered research and development into the "Floater Coat" (patented UVic Thermo Float PFD), which provides superior protection from cold water immersion (immersion hypothermia) through the incorporation of a neoprene rubber "diaper" that seals the user's upper thigh/groin region from otherwise cold, flushing and debilitating water.