Built for little ones who never slow down, the Big Kids Carbo-Tec Flx in Rust/Brown delivers durable comfort for play, school, and everything in between. Crafted from full-grain leather with a synthetic shaft, this lightweight boot is built on an oil- and slip-resistant Carbo-Tec rubber outsole with Bond Welt construction for flexible, all-day wear. The interior features a moisture-wicking mesh lining and a removable Room-2-Grow insole. When removed, the detachable layer provides an extra 1/2 size-so they can keep wearing their favorite boots even through a growth spurt..