[Crawl-Date: 2026-05-09]
[Source: DataJelly Visibility Layer]
[URL: https://whymugs.com/guide/keepcup]
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# The Reusable Cup — Why Mugs
> Tempered glass or BPA-free plastic shaped like a takeaway cup with a silicone band. Invented in Melbourne in 2009. Comes in approximately 4,000 colorway…

---

[![The Diner Classic](https://whymugs.com/assets/mug-diner-rTamDwEB.jpg) ](https://whymugs.com/guide/diner)
№ 01

[

## The Diner Classic](https://whymugs.com/guide/diner)
Restaurant-grade vitrified porcelain. Built to be dropped, stacked, and slid down a counter. Holds heat like a small kiln.

- Size
    - 10 oz

- Heft
    - Heavy

- Best for
    - Drip coffee, refills, long conversations

[Open full dossier →](https://whymugs.com/guide/diner)

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