Modal is a miracle fabric and that's what these pajamas are made of. It's like wearing nothing it's so lightweight. I've gotten 2 shirts made of Modal since getting these pajamas and am going to cruise thru Amazon for more modal pajamas. The fabric is silky, flowy, doesn't pick, pill, or pull. The shelf bra is great and the fabric, while sexy, isn't transparent, so I'm comfortable wearing them around the house. Wish this specific style came in more than one color. I'd buy them all,.