Gore Running Wear Men's Essential 3/4 Tights 91% NYLON, 9% ELASTANE, MESH: 80% NYLON, 20% ELASTANE Imported Mesh Tights: these 3/4 tights have mesh inserts for better ventilation and shifted seams to avoid chafing. Performance gear for the ambitious runner. Tight fit Zip pocket on back Flat-lock seams Shifted seams for less chafing Adjustable elastic waistband with flat cord