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Quick answer: Our listings state five materials: ceramic (most printed and crystal-look mugs), porcelain (Butterfly mug, Bohemian six-pack), clear glass (embossed tumblers), stainless steel (Sally X Jack glow tumbler), and reusable plastic (Bearista cup). A few 40 oz tumbler listings don't name a material — we flag those below.
Material decides what happens after unboxing: dishwasher or not, microwave or not, how heavy it feels, how it ages. This guide maps what each line is made of, using only what the listings state.
Ceramic: the everyday standard
Most classic mugs are ceramic — generally sturdy, good with hot drinks. Sunday Today and Sunday Printed (20 oz) are durable ceramic, dishwasher-safe. Late Show is ceramic under a glossy cobalt glaze — microwave-safe, hand wash advised. The Star Wars Light Saber mug is ceramic with a color-changing finish, hand wash only. The 3D Book Mug is a hybrid: ceramic body, glass handle.
Porcelain: finer, lighter, glossier
Porcelain is a type of ceramic, fired to a denser, smoother body. Two lines: the 16 oz Porcelain Butterfly Mug, whose listing notes fine porcelain's strength, light weight, and that it doesn't retain flavors; and the Bohemian Style Porcelain 6-Pack, six glazed, stackable mugs in different patterns. Both are dishwasher- and microwave-friendly; the Bohemian set adds one caution: avoid sudden temperature changes.
Glass: for seeing the drink
The Clear Tumblers with Detailed Design are high-quality clear glass with hand-pressed embossed patterns — thirteen designs, strawberries to hamsa hands, $19.99. Each is handcrafted, so the listing notes slight variations piece to piece. Dishwasher-safe, top-rack recommended; mild detergents protect the embossing.
Stainless steel: insulation with one hard rule
One top seller is metal: the 40 Oz Sally X Jack Skellington Tumbler, stainless steel with double-wall insulation. Its listing's trade-offs: hand wash to preserve the glow artwork, never microwave it — it's metal.
Plastic: light, tough, collectible
The Starbies Bearista Cup is molded reusable plastic — how it gets a sculpted bear shape that survives being carried around. Light, travel-friendly, hot and cold drinks per its listing, strictly hand wash: no microwave, no dishwasher.
So what are the "mineral crystal" mugs?
An honest nuance: two listings — Mineral Crystal Coffee Mugs and Handcrafted Mineral Crystal Mugs — state their material as high-quality mineral crystal with a polished finish. Two close siblings, Sparkling Crystal Gem Mugs and Textured Pattern Crystal Mug, are listed as ceramic with a crystal-inspired finish. All four share the gemstone look and are dishwasher- and microwave-safe; check the product page if exact composition matters.
Where the listings stay silent
Several 40 oz tumblers describe construction without naming a material: Pooh specifies an insulated inner structure, Dr Pepper an insulated construction, and Hello Kitty, Strawberry Shortcake, and the Star Wars 32 oz bottle focus on features over composition. We won't guess — and since none claims dishwasher safety, we hand wash all of them.
| Stated material | Products | Care headline |
|---|---|---|
| Ceramic | Sunday mugs, Late Show, Light Saber, Book Mug, Sparkling Gem, Textured Pattern | Dishwasher-safe to hand wash only — finish decides |
| Porcelain | Butterfly Mug, Bohemian 6-Pack | Dishwasher and microwave friendly |
| Glass | Embossed Clear Tumblers | Dishwasher-safe, top rack |
| Stainless steel | Sally X Jack 40oz | Hand wash; never microwave |
| Reusable plastic | Starbies Bearista | Hand wash only |
| Mineral crystal (per listing) | Mineral Crystal, Handcrafted Mineral Crystal | Dishwasher- and microwave-safe |
| Not stated | Pooh, Hello Kitty, Strawberry Shortcake, Dr Pepper, Star Wars bottle | Treat as hand wash |
Frequently asked questions
What is the difference between ceramic and porcelain?
Porcelain is a finer, denser type of ceramic fired at higher temperatures, giving a smooth, glossy, lighter-feeling body. Our Butterfly mug listing also notes porcelain does not retain flavors.
Which of your drinkware is glass?
The Clear Tumblers with Detailed Design - hand-pressed embossed glasses listed as high-quality clear glass, dishwasher-safe on the top rack.
Are the mineral crystal mugs made of actual crystal?
Their listings describe the material as high-quality mineral crystal with a polished finish, while the similar Sparkling Gem and Textured Pattern mugs are listed as ceramic with crystal-inspired finishes. Check the specific product page if composition matters to you.
Why does material change the cleaning rules?
Stainless steel must never go in a microwave, painted finishes often need hand washing, and glazed porcelain typically tolerates dishwashers. Each listing states the care rules for its own material.
What about the tumblers that do not state a material?
The Pooh, Hello Kitty, Strawberry Shortcake, and Dr Pepper tumbler listings describe features and construction without naming a material. We hand wash all of them and recommend the same.
More from the Mineral Mug blog
- Which of our mugs are dishwasher and microwave safe?
- Mineral & crystal mugs — what they are and how to care for them
- How to clean printed mugs and tumblers without ruining the print
- Shop glass cups
Material and care statements are drawn from each product listing as of publication; where a listing is silent we say so. Prices may change — see each product page.