minhag - Sargenes vs. Kittel

This is fairly simple:

Growing up in the US, the only white robes available for wearing during Rosh haShannah and Yom Kippur are standard kittels. I have heard that the kittel worn in Germany prior to the Shoah (called a sargenes in Western Yiddish) is quite different.

What are the differences between the Eastern Kittel and the Western Sargenes and what does the latter look like?