Flux footwear Adapt trainer Grey gum Mens 11.5 | Womens 12.5 Like new with box! Worn once. THE ULTIMATE BAREFOOT ATHLEISURE SHOE. The Flux Adapt is unlike anything you've ever worn before, and built to be as adaptable as you. EXPANDS WITH YOUR FEET Your feet are unique. That's why we've engineered a shoe that not only looks amazing, but performs and feels incredible no matter what your foot's shape. With a wider toe box, ultra-flexible sole, and just the right amount of stretch throughout, your feet will love the freedom found in our AdaptSol™ technology. ENHANCED BIOFEEDBACK With over 100 individual massaging cushions to mimic barefoot proprioception and provide just enough cushioning for any activity. FLEXIBLE TRACTION Utilizing a uniquely articulated, dual-injection rubber, the Adapt offers supreme flexibility combined with unmatched traction.