Sport-Tek Competitor Short. ST355 100% Polyester Reach your fitness goals in a budget-friendly, lightweight short that helps keep you dry and comfortable. Perfect for cross-training or outfitting your team, this unlined short is made with PosiCharge&#153; technology for vibrant color and long-lasting logos.3.8-ounce, 100% cationic polyester interlock Removable tag for comfort and relabeling Elastic waistband Continuous loop drawcord 9-inch inseam Double-needle hem