Feel the joy it presents and provides. The double-walled Ecooe glasses made of tasteless-borosilicate glass that are light and robust at the same time. Under the glass floor is a hydrophobic silicone membrane, which serves to equalize the pressure between the glass walls. It leaves the glass 'breathe': with cold drinks, no condensation forms on the glass surface and the glass does not leave any unsightly water rims. These glasses are also i for serving ice-cream, yogurt and other desserts. Specifications Capacity: 350ml / 12 Oz (We recommend that you fill the cup comfortably with 330 ml of liquid.) Notes 1. There will be minor differences between each product because of mouthblown and hand-finish craftsmanship. 2. By adopting traditional mouthblown, there will be an ending hole at the bottom of each cup. 3. Hand-washing is . Please avoid contacting with sharp objects when cleaning.