The exterior of the mug is either pastel blue or pastel pink. The interior of the mug is white which allows you to see the color of the tea. The extra fine mesh stainless steel tea infuser allows even water flow and has plenty of room for the leaves to expand. The Tilt & Drip tea infuser has a v-shaped clip which allows the infuser to rest on the side of the mug to allow tea to drain. The lid doubles as an infuser holder. The mug is BPA free and dishwasher and microwave safe ( do not put stainless steel tea infuser in microwave).