Tonka Stripe Heathered Black Black Silverescent® technology powered by X-STATIC® inhibits the growth of odour-causing bacteria on the top lightweight fabric is breathable and sweat-wicking seamless construction lets you move freely body-mapped Mesh venting helps you let off steam we updated the fit we opened the neckline for optimum airflow wear this on its own or as a lightweight base layer in cool weather workouts No rips or stains Smoke free home