The Silk Fabric is a natural protein fiber, some forms of which can be woven into textiles. The protein fiber of silk is composed mainly of fibroin and is produced by certain insect larvae to form cocoons.
It is the low-density fabric that makes for light and comfortable clothing. This gives high resistance to deformation. It has good insulation properties; warm in winter, cool in summer.
Silk is the strongest natural textile in the world. This textile was just recently surpassed in strength. Despite its immense tensile strength, silk is generally prized for other reasons. Comprised of natural protein fiber, silk mainly consists of fibroin, which is a protein that certain types of insect larvae secrete to make cocoons.
The most common consumer application of silk is apparel production. Silk has been prized for thousands of years for its incredible softness and durability.