From the Aritzia site: This is a button-up V-neck vest with a slim fit and princess seams for shaping. It’s made with Crepette™ — our one-of-a-kind Japanese crepe fabric beloved for its subtle texture, breezy drape and the fact that it basically never wrinkles. Features Lined Button closure Princess seams for shaping Materials & Care Origin: Fabric from Japan Content: 100% polyester Care: Dry clean Imported