Nike Pro Training Tight Nike Dri-FIT technology moves sweat away from your skin for quicker evaporation, helping you stay dry and comfortable. Mesh at the inseam and upper seat lets air flow to help keep you cool. A double-layer mesh gusset in front puts breathability where you need it. The snug elastic waistband holds the tights in place.Flat seams throughout feel smooth against your skin. 90% POLYESTER 10% SPANDEX.