All the shoes are made from 100% soft leather with a padded leather insole and elastic back for the ultimate comfort, fit and flexibility. The 'pre-walkers' have a leather sole, while the 'first steps' have a non-slip rubber sole that ensures your toddler keeps a firm grip on the world.The rubber soles are non slip and provide protection outdoors (from 9 months and up). These first walkers remain flexible and soft, allowing natural freedom of movement from heel to toe.