Klein bottle - one-sided, no boundary, very mysterious.
It is hand-blown, the raw material is high borosilicate glass, it is non-toxic, highlighting the curve of the bottle.
For those who appreciate the mixture of mathematics and art, this is a magical gift!
Size:
≈ 6cm (width of the rounded belly), height ≈10 cm.

Specifications:
- Self Research: Only the bottle
- As a Gift: Klein bottle + tote bag + gift box + card + infusion tube + USB Colorful lamp base.
-
- Can be laser engraved on the original wood base.
- Supports about 50 characters.
- Supports linear patterns.
- Supports text.
Attention:
- Handicrafts are not guaranteed to be perfect and may have minor imperfections.
- If it arrives damaged or broken, I will Shipping it again for you.
- Please do not use it as a water glass, as it is a closed loop inside and not easy to clean.
- Please do not inject dangerous materials.

