Product Description Specifications Set of 2 double wall mugs of 90 ml. Material: Bamboo Capacity: Under 30ml Eco Factors: Natural Material Features: Double Walled Material: Glass Features: Made of borosilicate glass, Which offers exceptional strength and durability, extending lifespan and able to be reused countless times. Including 2 bamboo coasters, with die cut on the base for a perfect fit of each cup. Set present Decoration Position: Coaster Print Size: 50 x 15 mm Product Materials: BambooGlass