The Primus Sport IV Kids is an upgraded barefoot trainer designed to be softer, more flexible and comfortable than previous versions — yet still tough enough for all-day play. Built for everyday adventures, it keeps little feet cool and ready to explore with a breathable mesh upper, grippy multi-terrain sole and easy on/off design that supports independent movers.

Features

• Zero-drop, thin sole: Brings kids closer to the ground for natural movement and sensory feedback. 
• No insole: Designed without an insole to enhance ground feel and barefoot experience. 
• Wide toe box: Encourages natural toe splay and foot development (typical of Vivo barefoot shoes).

• Upper: Breathable, lightweight mesh made from 100 % recycled polyester.

• Lining: Recycled polyester for comfort and airflow.

• Outsole: Kids Urban Play outsole — grippy and flexible for varied surfaces with about 2 mm base plus 2 mm tread.

• Fastening: Velcro strap (varies with size) or easy tongue construction for slip-on convenience.

• Vegan-friendly materials: Mainly synthetic, animal-free components.