Adidas hyperfast 2 junior girls trainers the adidas hyperfast 2 junior girls trainers are just the perfect little running inspired shoe to get little ones up moving and exploring the adidas hyperfast 2 junior girls trainers use a chunky sole to provide effective cushioning for all day comfort while the lightweight build makes movement effortless complete with a mesh styled upper for easy ventilation and a well padded collar and tongue for a locked in and secure fit girls trainers