Vivobarefoot Primus Sport IV Toddlers SkywayAlways put fun within reach Ready for non stop play all day No sticky little feet in the Primus Sport IV, thanks to its breathable mesh upper that's light and airy. Yet the Velcro closure ensures a snug fit, making these ideal for everyday wear for your bundle of curiosity. Let them roam free and play in any environment on a multi terrain outsole, pulling this versatile barefootwear on and off all by themselves with the handy heel webbing as they go.