Lululemon Metal Vent Tech Short Sleeve Shirt 2.0 Brand new with tags Color: date brown/blue nile Built to perform, sweat after sweat. The Metal Vent Tech collection, powered by seamless construction, is the ultimate gear for running and training More wearing, less washing. Silverescent™ technology, powered by X-STATIC®, inhibits the growth of odour-causing bacteria on the fabric Minimal seams to reduce chafe Added elastane improves stretch and shape retention Lu15