Acrylic Keychain: Penguin Diagram

We've created a physics acrylic keychain! This is a Feynman diagram illustrating the process of elementary particles forming. Among them, we've taken inspiration from the "penguin decay" or "penguin diagram," which visually resembles a penguin and is even named after it. Perhaps physics can be surprisingly "cute"? --- If out of stock, we will produce it upon your order. ・Size Acrylic part approximately 5cm (Size varies depending on the design) ・Hardware We can change the keychain hardware shown in the photo to a strap hardware free of charge. --- * Colors and designs may be revised each time they are submitted. Please note that there may be slight differences from the photos depending on the lot. * We may not be able to answer specialized questions.