The 3-mm neoprene upper and 5-mm neoprene insole of this paddle shoe are designed to provide exceptional warmth and comfort, ensuring that your feet remain cozy even in the chilliest of waters. The flexible rubber sole is crafted to offer high traction, allowing you to maintain stability on slippery surfaces, while also providing robust protection against rocks, sharp objects, and other potential hazards that you might encounter during your adventures. The gusseted YKK™ zipper is a convenient feature that makes it easy to put on and take off the shoes, saving you time and effort. Furthermore, the back neoprene panel is cleverly color-coded by size, which is a practical aid for Outfitters during commercial raft trips. This color-coding system helps them quickly and accurately identify customer sizes, ensuring that everyone is properly fitted and comfortable for the journey ahead.