The adidas RapidaRun Knit J is an adaptive running shoe engineered for neutral runners. Issued in January 2019, this 'Black' kids' version creates a contoured fit via the patterned knit upper and traditional lacing. Synthetic Three-Stripes, a reinforced leather panel and TPU heel piece offer zonal support. Cloudfoam cushioning and Stretchweb tread serve up a responsive, grippy underfoot platform.