Sport-Tek PosiCharge Competitor 7" Short: Go the distance with the moisture-wicking PosiCharge Competitor 7" Short. 3.8-ounce, 100% polyester interlock with PosiCharge technology UPF rating of 30+ Tear-away label Elastic waistband Continuous loop drawcord 7-inch inseam Designed for comfort, durability, and everyday wear.