Nike debuts its latest cross-training sneaker, with the Metcon 1 joining the sportswear leviathan's ever-expanding lineup of athletic footwear. The bright volt tone present on so many of Nike's sportier models is combined with a charcoal grey technical upper and a sole unit designed for maximum stability when lifting, running or jumping. With a focus on flexibility, lockdown and durability rather than cushioning, the shoe leans towards gym-based cardio and high-powered workouts rather than rigorous outdoor activity. Keep an eye out for the trainer when it drops January 31 at Nike.com.