Fabric spun from microfibers extracted from devilstrand mushrooms. It is very tough, good at insulating, and protects exceptionally well against flame.
Devilstrand is obtained by planting Devilstrand Mushrooms in a growing zone, or through random drops. The Devilstrand mushroom was genetically engineered to produce a high quality silk net. Its name comes from the greed it inspires in people. It is an extremely strong fabric, generally better and more valuable overall than cloth and leather.
Devilstrand takes 49 (gravel), 43 (soil), 37 (rich soil), 28 (hydroponics basin) days to grow before being able to be harvested. As this is even longer than it takes to grow most trees, you should plant it early and in large amounts.