The DropZero Barefoot Trainer from TYR brings you unparalleled flexibility. This barefoot trainer allows your feet to move naturally and connect with every surface during your workout. Designed with comfort and agility in mind, the DropZero Barefoot shoe complements the natural shape of your foot with a wide anatomical toe box and a ventilated upper knit. With the special TYRTac™ rubber outsole, this shoe gives you enhanced grip while maintaining your natural stance. The DropZero Barefoot trainer brings top levels of comfort, breathability and performance for all your gym workouts. Details Upper: This barefoot trainer boasts the most breathable 3D knit upper. Without an awkward toe break in the forefoot ventilation, breaking in this shoe is a breeze. The lockdown lace system at the midfoot helps keep your feet secure. The bootie at the tongue and heel lie comfortably thanks to a little bit of stretch, and do not dig into the skin. Midsole: The DropZero Barefoot trainer has a 0 mm heel height, keeping you grounded during your workouts. This shoe has a removable insole on an unfinished internal construction. Outsole: The TYRTac™ rubber outsole is key to your no-slip performance in the gym. Its thinness provides exceptional ground feedback and traction on all surfaces, from gym floors to workout machines.