Fabric: brushed poly (super stretchy). Sleeves are quilted knit.
Double zip for nursing access (inside panel ends right under bust, to lift. I only needed to unzip one side to nurse.
***Part of the Closet Clean-Out Sale. All are considered a size medium. They're all in good shape, but some items may have been worn and you could see some pilling or other natural wearing. They were all made for personal use, so they might be imperfect, just like the seamstress who made them.