The Mobius Strip And The Klein Bottle

Today at Enrich, Darryn showed us how to make a Mobius strip and told us about the Klein bottle. The Mobius strip looks like this:












and the Klein bottle looks like this:
My favorite is the Klein bottle but the Mobius strip is easier to make.
I can make a Mobius strip but not a Klein bottle. The Klein bottle is made by two Mobius strips put together. The Klein bottle has no inside or outside neither does the Mobius strip . The mobius strip is used for multiple purposes including an engine belt and a tape because it last double the length of a normal engine belt and a normal tape.