



The Basel Problem Zipper Pouch
Designed and sold by Bellassi
$14.69
$12.49 when you buy any 2+
$12.49 when you buy any 2+
$14.69
Product features
- Your rugged little personal valet: carry your makeup, pencils, phone, cards, anything
- Available in three sizes: check the size chart to find the right one for you
- Durable 100% polyester canvas with a metal zipper. Fully lined for added strength
- Vibrant, high-quality double-sided design, printed for you when you order
- Cold machine wash and low tumble dry
- Since every item is made just for you by your local third-party fulfiller, there may be slight variances in the product received

The Basel Problem
bold tribute to pure mathematical beauty — this glowing design showcases Euler’s famous solution to the Basel Problem: ∑(1/n²) = π²/6.
Rendered in electrifying neon turquoise, purple, and gold, the equation radiates energy as mathematical symbols orbit around it like sparks of logic. It’s chaotic, intense, and deeply satisfying — just like real mathematics.
Perfect for math lovers, physicists, and anyone who finds elegance in infinity. A piece that speaks the universal language of numbers — loud, bright, and brilliant.
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