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30 Ounce Vacuum Tumbler
Powder coated then laser etched to reveal design
2X heat and cold retention compared to plastic tumblers.
Double wall vacuum insulation with narrow design to fit most cup holders.
This shirt is the brain-child of Bi-Polar Bear, one of the Roller Derby Juniors on my San Diego Mini-Tremors team.
Wear it and show your Derby Love.
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