String Stalker Mammoth Rover 20 Personal Drink Cooler Tumbler

String Stalker Mammoth Rover 20 Personal Drink Cooler Tumbler

The String Stalker Mammoth Rover 20 oz. tumbler is the ultimate way to take your favorite beverage on the go. The double-walled vacuum insulation keeps your beverage the perfect temperature, with no condensation. The Rover tumbler is built with 18/8 kitchen grade stainless steel making it durable and it will not leave a metal flavor. With a crystal clear lid, rubber gasket and rubber stopper your beverage will maintain constant temperature longer, making it the ultimate drinking experience.

  • Double-wall Vacuum Insulation - Keeps ice longer or liquids hotter
  • Made of 18/8 kitchen grade stainless steel 
  • Holds 20 ounces of liquid 
  • For use with hot or cold liquids 
  • Rubber gasket and lid stopper prevents spills
  • No sweat design 
  • Crystal clear lid with rubber gasket 
  • BPA Free
  • 5 year warranty


We created String Stalker just for bow hunters. As we looked around, we found every bow hunter out there was proud of their lifestyle and showed their pride by wearing Bone Collector, Legendary Whitetails, Deer Gear, Buck Wear hats, t-shirts, sweatshirts and beanies. But no company focused ONLY on the bow hunter and the bow hunting lifestyle. Well, that's how String Stalker was born. We decided to create bow hunting lifestyle apparel just so bow hunters could show their love for their sport.

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