This teapot is completely hand crafted, made from heat resistant borosilicate glass, specially designed with non dripping spout and perfect ergonomic handle for sturdy grip Removable high-grade 18/10 stainless steel mesh infuser filter for loose teas or blooming teas, the lid fits the tea basket both when inserted or removed This beautiful teapot can be placed directly in the microwave oven or on either gas or electric stove tops, use a medium level heat source to heat water to brewing, your delicious teas can also be reheated either by microwave, directly on gas or electric stove tops, or kept hot on open flame tea pot warmers, can also be placed in refrigerator or in direct sunlight for cold brewing Borosilicate glass body has been optimized to be more thicker, it is stronger for everyday freely use. Dishwasher top rack safe or hand clean