Original: More recently, synthetic velvets have been developed, mostly polyester, nylon, viscose, acetate, and mixtures of different synthetics, or synthetics and natural fibers (e.g., viscose and silk).
Simplified: More recently, synthetic velvets have been developed, mostly polyester, nylon, viscose, acetate, and mixtures of different synthetics, or synthetics and natural fibers (e.g. viscose and silk).