SABLO Thermo Cups by Frederike Martens for blomus

SABLO Thermo Cups by Frederike Martens for blomus — Double-wall stoneware cups that keep drinks warm and hands cool, sold in pairs.

Part of SABLO, Frederike Martens’ partly glazed stoneware tableware for the German design house blomus.

The Design Story

Martens wanted a handleless SABLO cup that still works for steaming tea. The answer was a double wall: the same quiet cylinder, built twice. Martens, born in 1987, trained in Halle, Germany, as an industrial designer focused on glass and ceramics. Her work is about balance: plain, quiet forms, colors picked to last, and materials allowed to show what they are. SABLO was her debut collection for blomus.

The trick of SABLO is what is left bare. A glaze covers only part of each piece, and the rest is speckled clay that feels like fine sand. That is possible because the clay, mixed with quartz, minerals and oxides, is fired hot enough to be dense on its own. Cloud is a soft off-white with a hint of gray, Stone a pale gray with a cool blue cast, and Savannah a warm, deep yellow; on every color the bare band is a sandy beige.

Why You’ll Love It

You can wrap both hands around a fresh coffee without flinching. Drinks stay warm through a slow breakfast, and iced coffee doesn’t sweat as much. The pair makes a lovely gift for two.

Made for Real Life

Dishwasher and microwave safe, according to blomus. Our advice: let them dry upright so no water is left on the rim. Glaze and clay react to the kiln, so color and texture vary slightly from one piece to the next. Pairs well with the mugs, tumbler cups, tea service.

Product Details

Where It Shines

It looks at home on a slow Sunday morning, at a desk through a long call, on the balcony with iced coffee or as a gift for a couple.

Questions We Hear Most

Why choose SABLO thermo cups over regular cups?

They hold heat longer and stay cool on the outside, so you can drink tea without a handle.

Can I use SABLO thermo cups for iced coffee?

Yes, the insulated wall helps cold drinks stay cold.

What does a SABLO thermo cup look like?

A straight 4.1" cylinder with a Cloud glaze on top and sandy, speckled clay below.

Is a pair of SABLO thermo cups a good gift?

Yes, it is a natural gift for two coffee or tea lovers.

Can SABLO thermo cups go in the dishwasher?

Yes, and in the microwave too. SABLO is made for everyday use, not just for best.

When will my SABLO double-wall mugs leave the warehouse?

In-stock orders usually leave within 2–3 business days.

For the Trade

Working on a restaurant, a boutique hotel, a rental or a client’s home? Members of the LoftModern Trade Program (interior designers, architects, hospitality buyers, home stagers and commercial buyers) receive trade pricing, up to 20% off retail on eligible brands, plus concierge support for quantities, stock checks and lead times. Apply once with your business details; we reply by email with your account.

Why We Love It

Half glaze, half raw clay: every SABLO piece carries a little of the material it was made from. From a small town in Germany’s old steel region, the Blome family has gone from bicycle parts (1921) to metal gifts (1961) to the design label blomus (2000), still family-run in its fourth generation. LoftModern is an authorized blomus retailer.

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