Aerogel, a material originally developed by NASA for use in aerospace applications, is composed of more than 95% air and is the lightest solid material known to humankind. Tiny particles of infused aerogel form a temperature barrier to block out cold while the synthetic insulation traps air to keep you warm. Aerogel is the world’s lowest density solid and most effective thermal insulator.
Lightweight and warm, even in the wettest conditions
The best thing about synthetic insulation is that it stays warm even in extreme, wet conditions. Until now, that reliability has come at the cost of bulkier and heavier products. Taking cues from one of nature's most effective insulators - trapped air - we saw an opportunity to make synthetic insulation lighter and warmer while keeping its warm-when-wet properties. Enabled by PrimaLoft, our Aerolite Collection harnesses the insulating property of air to keep your pack light and your body warm, even in the wettest conditions.