Bobux Step Up Boys shoes for first walkers, Bobux Step Up Port Shoes, Bobux 727706, Navy blue leather. Bobux Step Up Port shoes are suitable for any little one about to take their first steps. There is a soft and supple full leather upper, as well as full leather lining, to help feet breathe. The lightweight, fully flexible TPR sole makes them feel that they are walking barefoot. There are two fully adjustable velcro straps to ensure a secure and comfortable fit around the ankles and foot.