Built to perform, sweat after sweat. The Metal Vent Tech collection, powered by seamless construction, is the ultimate gear for running and training. seamless construction Fabric is seamlessly constructed with yarns chosen for movement and shape retention—over time, and when they're soaked in sweat. Lightweight Retains shape features Designed for: Training Lycra®: Added Lycra® fibre for shape retention Reduced chafing : Seamless construction reduces chafing Silverescent® technology: Powered by X-STATIC®, it inhibits the growth of odour-causing bacteria on the garment Slim fit: Fits close to the body Excelent condition, no flaws.