Alexis striped wide leg asymmetric open pants

these beautiful pants have a red white and blue with a little bit of yellow fine stripe through it. The pants are asymmetric they’re rounded at the ham and they have like a crossover wrap, but actually are open to the upper thigh for a leg show. There is a back zipper. I can’t find a fabric tag but this feels like silk to me and I’ve been fondling fabrics for over 30 years. In excellent condition.