Earth Sea Sky's Lava Jacket is made from warm but lightweight Polartec 200 Thermal Pro fleece.
Polartec 200 Thermal Pro is an unrestricting 280 gram/m2, two jumper warmth fleece suitable for general outdoor activities, travel and urban wear. It's extremely durable due to the milling process where the fibres are shaved to provide extra vertical strength. This means that the outer surface shows no signs of wear even after years of use.