The first stages of sleep, to be able to as one and two, are light sleep, they occur soon there after you drop off.
Difference is that cowhide leather is looks shiny and feels smooth as compare to buffalo wash rag. https://pr.newsmax.com/article/Garage-Door-Grunts-Expands-as-Premier-Commercial-Garage-Door-Opener-Installers?storyId=668ea40cf31e8e0008dc8f9c