The Ultimate Barefoot Athleisure Shoe The Flux Adapt is unlike anything you've ever worn before, and built to be as adaptable as you. With a groundbreaking, responsive sole technology concealed in a classic look, it's the perfect balance of style and tech to support you in every activity throughout your day. Gym tested. Date approved. Zero-Drop Performance Width Forefoot Shape Ultra Flexible Breathable AdaptKnit™ Upper AdaptSol™ Footbed 10mm Stack Height Weight: 9.8oz (Size 10m) Retails for $125 Sand color.