Ozeri Serafino Double Wall Insulated Iced Tea and Coffee Glasses, 16-Ounce, Set of 2
- Set of 2 heat and shatter resistant borosilicate glasses that each hold 16 oz.
- Stronger and more durable than common glass, each glass features a wraparound contour that provides a natural aesthetic grip
- Patent-pending double wall design that suspends drinks within an inner wall, creating an engaging optical effect
- Designed to keep your hands cool with hot drinks and free of condensation with chilled beverages
- Completely microwave and freezer safe; Ships in an elegant 4 color printed box with a 1 Year Warranty; Satisfaction Guaranteed
Made of durable, heat resistant, mouth-blown borosilicate glass of the finest quality, the 16 oz Serafino glasses are the largest in the Ozeri Artisan Series of award-winning handcrafted drinkware. Borosilicate glass is stronger than common glass, shatter-resistant, and with the Serafino's double-walled design, it offers the ultimate insulation to maintain drinks at their ideal temperature. The Serafino's unique double wall design suspends drinks within an inner wall for an attention-grabbing optical effect, while the wraparound contour provides a natural aesthetic grip. Each glass is made to keep your hands cool even with your hottest drinks, and free of condensation with your chilled beverages. The patent-pending Serafino is great for coffee, cappuccinos, hot or iced teas, cocktails, frozen beverages and much more. Whether it is an occasion for a glass of wine, coffee, or some other beverage, borosilicate glass is completely resistant to acids, and your Ozeri glasses will never lose their original sheen. Each set contains 2 handmade glasses designed for lifetime use. The Serafino glasses are completely microwave and freezer safe, and ship in an elegantly printed and carefully packaged box with a 1 year warranty.
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I think the reason some people complain about "explosive" breakage with other brands is because of the partial vacuum some have. It tremendously improves the insulative properties, but the pop of air rushing *inward* startles people when they break, and I suspect the vacuum actually makes the glassware *more* fragile. These Ozeri glasses don't seem to have much pressure differential, but they definitely have a hard seal, as opposed to a silicone plug. They don't keep drinks hot or cold for a significantly longer period, but they don't sweat or get too hot to handle.
I'm looking for a good set of double wall glassware to use in a hot, humid climate, which won't sweat, and will keep ice for hours. These might fit the bill with some modification. I'm thinking of drilling out the seal on the bottom, putting a dab of epoxy over the hole, and setting the glass upside down in a foodsaver canister and pulling a vacuum. The air should leave the cavity in the glass and bubble out through the epoxy, which should then settle over the hole and harden. Once cured the vacuum can be released, and the glass should function more like a thermos bottle. I'll definitely post my results when I do this.
***Some glasses arrive, contrary to the description and photos, with a big ugly logo enameled on the walls. This is a despicably deceptive practice and one should scour the product's reviews to look for this before buying. I'm happy to report that these glasses only have a small white logo on the bottom. (Also, sometimes the seal 'nipple' is big and prominently visible near the glass's base, This glass's seal is small and unobtrusively centered at the bottom.)***
I've never dropped one of these. I've hand washed them a lot, but I do put them in the dishwasher, per the manufacturer's instructions, away from any other dishware, and they still all cracked.