comfort and freedom to move. the nike 6.5cm rival women's running shorts feature sweat-wicking fabric and a super-short length for comfort and enhanced range of motion during your run.. benefits. dri-fit fabric to wick sweat away and help keep you dry and comfortable. wide contrast waistband for a snug, comfortable fit and style. built-in briefs with lined gusset for support and enhanced comfort. vented hem for enhanced range of motion. back zip pocket and dual interior waist pockets for storing small items. product details. 6.5cm inseam . fabric: body: dri-fit 88% polyester/12% elastane. waistband: dri-fit 86% polyester/14% elastane. lining: dri-fit 100% recycled polyester.. machine wash.