Selected G3.3 high borosilicate heat-resistant glass, crystal clear, more wear-resistant. A smooth surface is not easy to water damage, always keep beautiful and clean. Hardness is higher than ordinary glass, more suitable for temperature, and not easy to crack. The silicone cover design, effectively isolates the heat, not hot hands. Comes with a straw, drink tea on the go, and can be operated with one hand. Rounded cup mouth, polished, good taste. Non-slip cup bottom design, the bottom of the cup is not easy to slip. Strictly selected high borosilicate glass, resistant to rapid temperature difference, put about 0 ? ice cubes pour boiling water, the cup is safe and sound. Measuring 7.09*2.76 inches, this custom creative bamboo lid borosilicate straw glass 20oz. Usage Scenarios: Office supplies, school stationery, corporate promotions, trade show giveaways. Customization: Logo printing available with multiple packaging and color options. Product Highlights: Portable, durable, practical for daily use.