Size 12. EUC. I am also selling a Play Off the Pleats Lululemon skirt in Cassis that I purchased to wear with this. I'm listing all of my Lululemon size 12 and 14, so be sure to check out my closet. I offer a 10% discount on orders of 3 or more. Description from the website: Go ahead, get sweaty. The Swiftly Tech collection, powered by seamless construction, is the ultimate gear for running and training. Seamless construction minimizes chafing Features Designed for: Run Silverescent® technology: Powered by X-STATIC®, it inhibits the growth of odour-causing bacteria on the garment Lycra®: Added Lycra® fibre for shape retention Ventilation: Mesh construction for breathability Fit : Body Skimming, hip length Questions? Leave a comment below!