Alpinestars: Ultra-lightweight, technical base layer anatomically optimized to be worn under outer garments.Comfortable moisture-wicking fiber aids all-round body temperature control and performance.Fully body-mapped with strategically positioned open mesh inserts for ventilation.Seamless tubular construction allows for performance compression fit.Flat-lock ergonomic seams allow unrestricted movement and an enhanced range of motion.Incorporates multi-density Stealth® chamois seat padding absorbs saddle vibrations and improves overall comfort and breathability.