Product Name: Klein Bottle 4D
The Klein bottle is a geometrical object, named after the German mathematician Felix Klein. He described it in 1882, and named it Klein’sche Fläche (Klein surface).
Because the surface is non-orientable, there is no “inside” or “outside”. This means that if a liquid were filled “in the bottle”, it would run down its surface.
How To Fill A Klein Bottle The Easy Way？
Shipping And Return Policy:
1.We Are Committed To Providing The Best Products For Buyers. Each Product Will Be Tested During Purchase And Storage.
2. Orders processed timely after the payment verification.
3. We Accept Returns And Refunds Within 30 Days After Order Completed, Please Contact Us.
4.We only ship to confirmed order addresses. Your order address MUST MATCH your Shipping address.