Lululemon Men's Metal Vent Tech Short Sleeve Shirt - Dark Heathered Grey ​/​ Black (Size S) Super lightweight, moisture-wicking, and seamless so it doesn't chafe when you train. These usually retail for $78 new. Condition: Excellent pre-owned condition with no stains, tears, or pulled threads. The inner size tag was removed for comfort while working out, but fits as a Size Small. Product reference page: https://shop.lululemon.com/p/metal-vent-tech-short-sleeve-shirt-3/lbhe17vi2f