The glamorous white porcelain will complement on any home decor. It's a perfect housewarming gift. Its smooth white appearance will help to build up a relaxed and happy feelings while enjoying milk or coffee. Made of ceramic, bamboo. You can give them a wash if the outside becomes sticky or dirty.Not safe for use in Microwave Oven. Material: Ceramic+Nature Bamboo Size: Each Jar(with lid):Length x Width x Height:3 7/16 x 3 9/16 x 3 7/16 inches(8.8x9x8.8cm) Spoon: Length x Width:4 1/4 x 1 inches(10.7x2.5 cm) Bamboo Rack: 11 13/16x 3 3/4(30x9.5cm) Each Jar Volume: Approx. 270 ML(9.1 fl oz) Color: White Style: Simple Applicable for: Kitchen cooking/Home decoration/Spice bowl/Small objects storage,etc. Package included: 3 x Ceramic Jars with lid,3 x Ceramic Spoons,1 x Bamboo rack,4 x Chalkboard labels Q: Do these mugs get hot if you put them in the microwave to reheat your coffee? A: Yes, it does. The liquid gets the mug warm, not that the mug gets hot from being microwaved. Q: Can I put it in the dishwasher? A: This coffee mug is ceramic. And it's dishwasher safe. Thank you. Q: Does the bamboo lid have an airtight seal? A: No, it just sits on it, very nice but not sealed. NOTE: This ceramic coffee cup needs to be removed the lid when it is heated, and please use it carefully due to the thermal conductivity of the ceramic. Please put the spoon back into the notch after use to prevent from spilling out if it was hit by the lid when closing.