Swing dress petticoat

Hello! So as I was shopping at a vintage inspired shop, one of the shop keepers mentioned how a swing dress petticoat was usually made of softer material and was a little less poofy than traditional petticoats. Does anyone know where they can be found? I tried Amazon but the only ones I found were made of the right material but they were on the short side. I’m new to vintage/vintage inspired fashion so if this post doesn’t make sense please let me know.