- Size: 39 • Unisex barefoot shoes, breathable, lightweight, and non-slip. • Provide protection against injuries, heat, and cold. • Allow a natural and barefoot feeling anywhere. • Ideal for running, fitness, leisure, and office. • Wide toe box for greater comfort and freedom of movement. • Zero Drop sole that adapts to the foot's movement. • Non-slip rubber sole to improve grip. • Perfect for indoor and outdoor sports like running, walking, cycling, and climbing.