This is a mug with a lid for steeping tea leaves. It's designed to keep your tea warm and prevent dust from entering, making it suitable for office use. It's unused and in good condition. It holds approximately 220CC to 250CC. The tea strainer is made of porcelain and can be placed on the lid of the cup. The diameter is 7.5 cm and the height is about 10 cm. Unfortunately, it doesn't come with a box. If you're giving it as a gift, a cute box would likely be appreciated. As it's fragile, it will be carefully packaged with bubble wrap for shipping.