Double Wall Glass Colorful Mug

Specifications:
Product material: high borosilicate glass
Processing technology: handmade
Product capacity: 250ml
Product size: 8.5*7.5cm (cup diameter * height)
Heat resistance: -20℃-150℃ (expansion coefficient 3.3)
Remarks: This product is Gaopeng silica glass and can be directly washed into 100°C boiling water.