Silk is one of the oldest natural fibers used to manufacture fashionable clothing. Sericulture is the production of silk from the coccoon of the mulberry silkworm (Bombyx mori).
Silk is used to make high end garmets such as base layer underwear, thermal layer longjohns and fashionable outer layer clothing such as shirts, dresses, etc. Historically silk has been used as both summer and winter clothing. Militarily it has been used for primitive arrow resistant armor and later for bullet resistant vests prior to the invention of better synthetic materials such as ballistic nylon and kevlar. It also was used for making parachutes before being replaced by synthetics. Silk is stronger than most other natural fibers and works well as both an insulator and as a reflector of heat. The disadvantage of silk is that it becomes weaker when wet (looses about 20% of strength), suffers over time from exposure to sun light and is a poor conductor of electricity meaning that it suffers from static cling. Like other natural fibers it can be attacked by insects, particularly if left dirty.