We have found THE perfect insulated tumbler for any natural horseman.  It's rugged, lightweight, super convenient and works amazingly well.  In the barn or in the office, this is a must have.

• Keeps liquids hot for 20 hours and ice cold for up to 50
• Wide opening fits ice, fills and pours easily
• Dishwasher safe (bottom only - hand-wash bamboo cap)
• 18/8 food-grade stainless steel
• Climate Lock double-wall vacuum insulation
• Won’t retain or impart flavors