Crafted from durable 18/8 stainless steel with double-wall vacuum insulation, this Rapala Branded Hippo Mug keeps drinks cold for up to 11 hours or hot for up to 7 hours. Featuring a convenient screw-on clear straw lid with twist closure (and a removable straw) and auto cup-holder friendly base, it’s both practical and stylish for everyday use. The mug has a matte powder coated finish.