Traditional & Core Materials in Life Jacket Construction

When it comes to water safety, the humble life jacket - also known as a Personal Flotation Device (PFD)  - is non-negotiable. However, modern life jackets are far from the bulky, uncomfortable gear of the past. Today, innovation in life jacket materials and technology is driving a wave of trends focused on enhanced performance, comfort, and environmental responsibility. Understanding these advancements is key for anyone involved in marine activities, from casual boaters to professional sailors.

The primary function of a PFD is buoyancy, and the materials used are critical. Traditionally, two main types have dominated:

Foam Life Jackets (Inherently Buoyant): These are the most common type for general use. They use closed-cell foam materials like Polyvinyl Chloride (PVC) or Polyethylene foam. These foams are lightweight, durable, and provide reliable, permanent buoyancy without the need for inflation. They are ideal for children, non-swimmers, and in rough conditions where puncture is a concern. It is also called foam life jacket, PVC life jacket, or inherently buoyant PFD.

Inflatable Life Jackets: Popular for their high comfort and low profile, these rely on inflatable chambers made from rugged polyurethane or nylon fabrics. They are activated either manually (manual inflation) or automatically upon water immersion (auto-inflation) using a bobbin or hydrostatic mechanism. These offer superior mobility and are a top choice for adult boaters, anglers, and paddlers.it is also called inflatable life jacket, auto-inflate PFD, or hydrostatic PFD.