With a huge capacity of 40 ounces and the ability to keep drinks cold to up to 11 hours, this stainless steel mug is perfect for keeping around for hydration throughout the day. The screw on clear straw lid has a twist closure to for sealing when the straw is not being used. The double wall, vacuum insulated 18/8 stainless steel will also keep drinks hot for up to 7 hours.
