This 800 ml stainless steel shaker is double-walled which means that your drinks remain warm or cold over a long period of time. This high quality shaker is leak proof and made of high quality stainless steel. A big advantage from this shakes is that you don't have to worry about nasty smell. Plastic shaker are known for their nasty smells, but due to the stainless steel the bacteries can't absorb into the steel so you won't get any smells in your shaker. The body is made of stainless steel and the top of synthetic matieral.The lacquer is coated which is known for its very strong hold. Eventhough the coating is very strong, we advise you to clean the shaker by hand and not in the dish washer.