The silk coating its body is thin but sufficiently strong. Cascoon's silk has a luster and texture superior to that of Silcoon's, and clothes made using Cascoon silk are regarded as top-notch.
CASCOON makes its protective cocoon by wrapping its body entirely with a fine silk from its mouth. Once the silk goes around its body, it hardens. This POKéMON prepares for its evolution inside the cocoon.