The Nike Denier Differential Pullover: A lightweight, vented topBuilt-in mesh lining from waist to hip offers breathability in the Nike Denier Differential Women's Running Pullover. Lightweight and ventilated at key body points, the Denier Differential Pullover has flat seams and sweat-wicking fabric for a no-distraction fit. BenefitsDri-FIT fabric to wick sweat away and help keep you dry and comfortableUnderarm mesh panels for enhanced ventilationRaglan sleeves and stretch panels for better range of motion Reflective elements at front, shoulder and back for safety during night runsReflective loop at upper back to keep media-player cords out of the wayThumbholes for warmthZip pocket at lower back for storage of small items and media playersFlat-seam construction to minimise chafingAdditional DetailsFabric: Body: Dri-FIT 93% polyester/7% elastane. Panels: 90% polyester/10% elastane. Machine wash