Nike Women's Zoom Rival XC 2019 Cross Country Shoes Size. 7.5 From the track to training the Nike Zoom Rival XC 2019 cross country shoe has you covered. The multi-layered mesh upper offers support and breathability while a rubber lugged outsole provides traction on a variety of surfaces. Thin speed laces have a knit-in texture that helps keep knots more secure than traditional laces