The mug is made from high quality new bone china. Each piece is hand dipped in a marble glaze . The intensity of the marble look will vary by piece.  Each mug contains our exclusive tilt and drip tea infuser. The extra fine mesh stainless steel infuser allows even water flow and has plenty of room for tea leaves to expand and brew. Each infuser has a v-shaped clip that allows you to rest the infuser on the side of the cup. No hands are needed and the tea will drain in minutes. The lid doubles as an infuser holder.  Tea infuser mug is BPA free and dishwasher safe.