The Boundary Shoe pushes the limits of what a neoprene boot can do; it's a touring, canoeing and portaging dream. When wading is inevitable, you'll appreciate the knee-high, H2Oproof 5-mm neoprene upper. Comfy 7-mm insole atop a 7-mm rubber sole provides the Safe guardion and Strength you've come to expect from our footwear. 2-mm plastic shim for even more Safe guardion from sharp, pointy objects. Based on our Trendy Paddle Shoe, this mukluk-Design boot features a high-traction sole and arch strap for secure footing. Each shoe is individually tested to ensure it's H2Oproof. Whole sizes only Girl order one size smaller. 1/2 sizes order one size larger.