Skip-the-Chafe, Seamless Construction - Minimal seams to reduce chafe, Lightweight, Mesh construction for breathability, Added elastane improves stretch and shape retention This shirt has the three bars on the left upper chest seam indicating the size which signify a size 6. Size tag is missing Lululemon Swiftly Tech Short Sleeve Shirt 2.0. This technical tee is designed for running and training, featuring lightweight fabric and seamless construction for unrestricted movement. Silverescent™ Technology: Powered by X-STATIC®, this technology inhibits the growth of odor-causing bacteria on the fabric, keeping the shirt fresh. Breathable Design: Mesh venting encourages airflow to keep you cool during intense activities. Material Composition: Typically made with a blend of Nylon, Recycled Polyester, Elastane, and X-Static Nylon. PIT TO PIT = 18” } WAIST = 23 }