Engineer Bob’s Favorite Tumbler


  • The 22 oz. Black tumbler is a crowd pleaser for concerts, sporting events, or even around the house activities.
  • Its Double Wall Vacuum Insulation keeps beverages hot for up to six hours and cold items chilled for up to twenty-four hours.
  • The tumbler includes an Acrylic push in top with sliding closure for easy use and additional insulation.
  • Recommended to hand wash only.
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