Wholesale Clear Double Wall Glass Coffee Cup HB-0003
Wholesale clear double wall glass coffee cup HB-0003 — insulating air layer keeps drinks hot and hands cool. 350 ml heat-resistant borosilicate, OEM welcome.
The classic 350 ml double wall cup in fully clear borosilicate glass — the trapped air layer keeps coffee hot, hands cool, and makes latte or juice look like it is floating. Sizes are customizable; sold wholesale with OEM packaging.
Specification Overview
| Capacity | 350 ml (custom sizes available) |
|---|---|
| Dimensions | Ø8.5 × 11.5 cm |
| Material | Lead-free heat-resistant borosilicate glass, double wall |
| Craft | Hand-blown |
| Applications | Coffee, tea, juice, iced drinks; home, office, commercial |
Borosilicate Glass Know-How
What buyers ask us most: why double wall and why borosilicate. Double wall cups are blown as two separate glass layers, then fused at the rim, trapping a still air layer in between. That layer slows heat transfer — a hot drink stays hot longer, the outer surface stays warm rather than scalding, and the liquid appears to float, which is exactly the effect gift and café buyers pay for.
Borosilicate (3.3) glass has a very low thermal expansion coefficient, so it tolerates sudden temperature swings of roughly 120–150 °C without cracking — microwave, dishwasher and freezer safe, lead-free, and noticeably lighter than ordinary glass. All five SKUs here are hand-blown heat-resistant borosilicate and offered wholesale; custom sizes, colors and packaging are available — please confirm details per model.
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