This groundbreaking baselayer has been tested and proven to improve strength and endurance. Seriously. The way it works is that the mineral-infused fabric absorbs the energy your body emits and reflects it back into your tissues and muscles. That means your muscles can work harder. And you get better.As your body emits energy, the mineral-infused fabric absorbs & reflects it back into tissues & muscles, improving endurance & strengthMesh insets on side hem for added breathability Anti-odor technology prevents the growth of odor-causing microbesModified raglan sleeve & low profile collar constructionPowered by CelliantBody: 82% Polyester18% ElastaneMesh Panels: 90% Polyester/10% ElastaneImported