Description: This is a stainless steel insulated cup Capacity is 30oz, 887ml It can hold a lot of water. It doesn't need to refill the cup all the time. It can also keep warm It has an easy-to-carry and comfortable grip and a narrow base suitable for most cup holders. It has a rotating cover in three positions: a straw opening, designed to prevent splashing, a seal to fix the reusable straw in place, a drink opening and a full cover top.