Running, jumping, braking, climbing and shooting: from 3 to 5 years old, movements and energy expenditures are the most important for kids so that they can inflict many pressures to their growing feet. Therefore, the B4 and all our Intrepids models are designed to: resist and be compatible to those constraints (TR outsole resisting to abrasion, flexible insole) protect kids’ feet (removable insole to cushion and insulate), support kid’s growth (laces with zip or velcro for its autonomy)? And always with a fashion style! .