Design for Tea Lovers: All-in-one design, perfect combination of clear tea cup, glass tea infuser and natural bamboo lid, ideal personal tea set for tea drinker to brew a good cup of tea Premium Materials: Tea cup and infuser are made of mouth-blown, lab-quality borosilicate glass by expert artisans, purer and stronger than ordinary glass, temperature range from -20 °C to 150 °C, lid is made of natural bamboo Easy to Use: Just add tea and pour water into the glass cup, cover the lid and steep for a while, watch the steeping process, adjust the tea concentration, make a perfect cup of tea, bamboo lid works as coaster for tea infuser Perfect Tea Gifts: 12oz tea cup is a right capacity of tea for one person to enjoy, it is a great gift for tea lovers, women adults and your love ones Easy to Clean: Glass mug and tea infuser are dishwasher safe, bamboo lid is hand wash only, emoi will offer friendly customer service if you have any questions