ASICS GEL Quantum 90 2 Junior Trainer. Colour: Black. Features: Grippy rubber tread for improved traction, Signature ASICS branding, GELâ„¢ technology cushioning. These trainers bring comfort and sport technologies together with a breathable open mesh upper supported by a lightweight SpEVA midsole and 90-degrees of GELâ„¢ technology cushioning.