Kid-Friendly Reebok CrossFit Nano 7 - Infant & Toddler Training Shoes in Primal Red / Black. CrossFit runs in the family, so Reebok created this infant and toddler takedown of the Nano 7. The mini sneaker features box-ready tech like a breathable NanoWeave upper and an external heel counter. The rubber outsole delivers traction on different surfaces. Materials: NanoWeave upper for lightweight comfort and breathability. Low-cut design for freedom of motion and quicker transitions. Best for: Comfort, stability, CrossFit-inspired style. CMEVA midsole cushions every step. High abrasion, multisurface rubber outsole delivers traction. External heel counter for a more secure fit. Color: Primal Red / Black / White.