I am pretty sure I have seen the atomic fabric before, perhaps some midcentury Britiah? Its cotton.
The other one, dark moss green, its CRIMPLENE. I hate its overlooked so badly, excellent good quality material that keeps its shape and color, is comfy (stretches a bit), easy care and no ironing. And I am gonna prove it by making a shirtwaister for myself. Yes, in 50s style.
#atomicfabric #midcenturyfabric #noveltyfabric #vintagefabric #crimplene