This set is soft, lightweight, and such a pretty color! The tank is ribbed and has been worn once. It is a Chico's size 1 (equivalent to M 10-12 in other brands). The cardigan is new with tags and a Chico's size 1P (petite). Both pieces are like T-shirt knit but softer and with a bit more structure and plenty of stretch. The pieces are a perfect match, a beautiful lavender color. Of course they can be worn together or separately. (I apologize for the wrinkles! This has been in storage.)