What Is an Aerogel Jacket and Why Is It Warmer Than Down?

When winter strikes, we all look for outerwear that is both lightweight and incredibly warm. In recent years, the aerogel jacket has emerged as a game-changer, often referred to as “wearable space technology.” But what exactly is an aerogel jacket, and how can it outperform traditional down insulation? Let’s dive in.

What Is Aerogel?

Aerogel is one of the lightest and most insulating materials ever created. Originally developed by NASA, it is composed of over 90% air, yet offers exceptional thermal insulation. Often called “frozen smoke,” aerogel is widely used in aerospace to protect astronauts and instruments from extreme temperatures.

Key Features of Aerogel:

• Extremely low thermal conductivity: Among the best insulators on Earth
  
  * Ultra-lightweight: Significantly lighter than conventional materials
  
  * Superior heat retention: Effectively traps body heat even in sub-zero environments

How Aerogel Jackets Work

At Alpargali, our aerogel jackets feature a multi-layered composite structure that integrates aerogel nanoparticles within insulating fibers. This creates a thermal barrier layer that blocks cold air while sealing in warmth, even during the harshest winter conditions.

Unlike down, which traps warm air, aerogel insulation works by physically preventing heat transfer, offering more consistent performance in humid or windy conditions.

Why Is It Warmer Than Down?