Lululemon Metal Vent Tech 1/2 Zip II Blue size Medium Color code is likely Mineral Blue / Nautical Navy Great condition! No flaws. From website Seamless construction, anti-stink technology, and strategic venting make this long-sleeve half zip training-session ready.Lightweight fabric is sweat-wicking and four-way stretch features Designed for: Training Shine-bright : Reflective detail helps keep you on the radar in low light Silverescent® technology: Powered by X-STATIC®, it inhibits the growth of odour-causing bacteria on the garment Seamless construction: Reduces bulk to help prevent chafing