Using thickened food-grade high borosilicate glass, suddenly cold and heat, not easy to crack, silicone cup cover, the use of silicone material, comfortable to touch, stylish and beautiful. Rounded cup mouth, cup mouth polished smooth, rounded and delicate, lip feel comfortable. Double-layer cup body, to avoid the temperature directly to the palm, cold drinks in the summer without ice hands, hot drinks in winter without hot hands, suitable for all seasons. A variety of capacities to meet your different needs, coffee, milk, tea, juice, load what you can. The lid and the movable button can prevent spilling when it is closed when drinking, turn the movable button to the temporary position, and leak out the drinking spout can. Measuring 2.36*3.15*6.69 inches, this custom double insulated clear glass egg-shaped cup 15oz. Usage Scenarios: Office supplies, school stationery, corporate promotions, trade show giveaways. We offer logo printing and full packaging customization. Product Highlights: BPA-free, leak-proof, travel-friendly.