Pulling from website: The TYR Men's DropZero Barefoot Trainer offers unmatched flexibility, enabling your feet to move naturally and fostering a deeper connection with every surface you train on. Its ergonomic design perfectly complements the natural shape of your foot, while the ultra-thin TYRTac™ rubber outsole ensures direct ground feedback and superior traction on any surface. The Dropzero Barefoot Trainer features an innovative stability strap design, providing the extra support you need to seamlessly integrate lifting into your training routine. Only worn a few times. Not the correct size for me/was given to me for free from work