MindWare
✓Price
$64.99
Klein Bottle Kleinsche Fläche Never Full of Water, Mathematical Model Glass Sculpture Educational Tool, Four-Dimensional Space Science Model decoration，Gifts suitable for math teachers and students
★★★★★
$64.99
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1
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About this item
- 🧠 Tangible "4D Geometry": A Topology Masterpiece You Can Touch This is more than a bottle; it's a graspable "fourth dimension." As an iconic model in topology, it features a single, endless continuous surface (with no distinct inside or outside). An ant could crawl from the "inside" to the "outside" without ever crossing an edge. It transforms abstract mathematical concepts into a tangible work of art, making it the perfect catalyst for curiosity and scientific discussion.
- 🔬 Scientific-Grade Glass, Meticulously Handcrafted Each Klein Bottle is handmade from high-quality borosilicate glass, the same material used in laboratory equipment. It offers excellent resistance to thermal shock (withstanding from -20°C to 220°C). The unique tiny bubbles and subtle variations are not flaws but the signature of artisan craftsmanship, guaranteeing that no two are exactly alike.
- ✨ The "Spill-Proof" Paradox: A Marvel of Scientific Design Thinking of using it as a vase or to hold water? You're about to witness a fascinating scientific paradox in action! Due to its self-intersecting structure, any liquid poured in will simply flow back out. This means it can never be truly filled—a brilliant conversation starter for your office or study that perfectly illustrates the wonder of mathematics, while also serving as a captivating decorative centerpiece.
- 🎁 The Ultimate Gift for Inquisitive Minds Searching for a gift that sparks immediate wonder and leaves a lasting impression? Look no further. For students, professors, scientists, or any creative mind, this is an exceptional present. It conveys not just aesthetic appeal, but a profound appreciation for knowledge, imagination, and the spirit of exploration.
- 🚫Safety & Usage Guide Please note that this is a decorative and educational artifact, not for practical use. Not Food-Safe: Please do not use it to hold any beverages or food. Fragile Handle with Care: As a delicate hand-blown glass item, please handle with care and avoid impacts. Cleaning Advice: If cleaning is needed, rinse briefly with a small amount of water and allow it to dry thoroughly. Due to its complex internal structure, do not attempt to fill it completely with water for cleaning.
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What customers say about Bigamart
10 Trustpilot reviews total, with 2 shown at a time.
Trustpilot
★★★★★
Excellent
4.5 average rating
S
Sigalit
🇮🇱 · January 2026
★★★★★
I wrote to Bigamart's customer support and they accompanied the process of reshipping the item until it finally arrived. I felt a genuine effort to solve the problem till it was finally solved.
V
Verified buyer
🇦🇺 · November 2025
★★★★★
The package was here in Australia from England in a few days — so quick! Something was missing and they refunded it straight away. Pretty happy with these guys.
Showing 1–2 of 10 reviews
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