Airgo, size 7, ultra lightweight knee boot, built for comfort, 70% lighter than other waterproof rubber & pvc knee boots, 15″ plain toe, cleated outsole design for good traction, 100% seamless waterproof construction, tiny air bubbles self insulate, keeping feet warmer in the cold & cooler in the heat, great low temperature properties for flexibility & durability, removable polyurethane contour insole completes the comfort experience.