Straight shirt made of long sleeve cupro fabric. Ruffles are sewn along the right line of the clasp and along the lower cut of the cuffs. Cupro or Cupra (CUP) — is an expensive high-quality material that looks like silk. Refers to artificial fabrics obtained from a natural polymer of pure cellulose, cotton or wood raw materials, by processing with a cuprammonium (copper-ammonia) solution. Poplin is made by weaving. As a basis, take two threads, different in thickness, one – thin, and the second-twice as thick. This creates a ribbed relief. The fabric consists of 100% cotto..