snug support, zoned breathability. the nike circuit 2-in-1 women's training shorts feature strategic perforations and interior compression shorts for ventilation where it counts and a supportive fit.. benefits. dri-fit fabric to wick sweat away and help keep you dry and comfortable. built-in stretch shorts with inseam gusset for support and range of motion. perforations at back waist and sides for strategic breathability. flat seams help reduce irritation due to chafing. wide stretch waist with print detail for a snug fit and athletic look. product details. fabric: body: dri-fit 85% polyester/15% elastane. shorts: dri-fit 84% polyester/16% elastane.. machine wash.