Key features of this specific cup include: Capacity: It appears to be the popular 40 oz size. Tumbler cup Lid: It has the signature FlowState™ 3-position lid with a rotating cover for a straw opening, a drink opening, and a full-cover top. Handle: It features a large, ergonomic handle for easy carrying. Insulation: Like all Stanley tumblers, it has double-wall vacuum insulation to keep drinks cold for hours.