Sturdy 8-oz. DuluthFlex® Fire Hose canvas has built-in stretch that lets youngsters somersault or shimmy up trees in total freedom. Exclusive Crouch Gusset® gives them room to swing a leg over the teeter totter. 14 pockets – including a bib multi-pocket with crayon slot – provides plenty of places to stash sparkly rocks and other treasures. Double-layer knees take twice the scuffing and crawling. Durable metal hardware, including leg snaps for toddler sizes, hang tough through loads of laundering. In the world of kids' overalls, these are definitely overachievers.