Swig 18 ounce Golf Partee Mug is perfect for golf enthusiasts. The dimpled design really looks and feels like a golf ball! Thanks to Swig's triple insulation technology, this travel mug keeps drinks cold up to 9 hours and hot up to 3 hours. The cup holder friendly shape makes it the perfect travel companion, to and from the conference room, the classroom or just your living room! Top rack dishwasher safe.