Not a beginner's sled. Good harness for recreation, or sprinting races. Made to leave the chest free to expand as much as needed when breathing. Best for endurance racing. Outer layer is polartec to keep out wet snow and water, but still breathable.
Inner layer is fleece to keep paw warm and dry.
Only has one layer of fleece to keep paw dry and warm. Best for powdery snow. Stays on the dogs back, even when they are running. Outter shell is polartec, inner shell is fleece to keep your dog warm and dry when they go out on the rainiest days. Takes two double a batteries.