Nathan Peak Hydration Belt - 80190 birkenstock The mesh upper is lightweight

The mesh upper is lightweight and breathable

A new SpringRamp forefoot design works with the midsole to increase forward momentum

while reflective detailing enhances visibility in low-light conditions

The specially designed heel flexes and springs back for easy entry

Nathan Peak Hydration Belt - 80190 birkenstock The mesh upper is lightweightKeep this SpeedDraw™ Flask close at hand and in place with this lightweight Waist Pak featuring an angled insulated bottle holder. Features: 18 oz 535 mL Ergological™ SpeedDraw Flask with Push Pull cap Angled, insulated bottle holder allows easy one handed access and bounce free ride Extended side panels hug the body comfortably for a perfect fit Expandable zippered stretch pocket keeps essentials protected External shock cord system for