extreme navy red 577909 with laces and a synthetic

with laces and a synthetic outsole

low profile fit

This model has a new anatomical shape to provide a perfect fit with a patented knee pad that keeps the protection in the correct position

Oversized Swoosh design extends to the midsole as an emblem of the Nike ZoomX

extreme navy red 577909 with laces and a syntheticExtreme is a warm thermal boot with an award winning design and many smart details a favorite for both children and parents. Thanks to the polyurethane construction with adjustable cuff, Extreme is waterproof, light and comfortable enough to wear all day. The boot is made of a flexible polyurethane material called Elastopan and is a 100% PVC free, degradable material that contains millions of tiny air bubbles and is 40% lighter than PVC and rubber.