About This

• Versatile Fit: Designed to accommodate both 20 oz and 30 oz tumblers, making it ideal for various drink sizes
• Durable Material: Made from marine-grade stainless steel, ensuring strength and durability in harsh marine environments
• Spill Prevention: The insert helps prevent spills by securely holding your tumbler in place, even in rough conditions
• Easy Installation: Requires a 4-1/8" hole for installation and includes a bottom drain tube to manage any liquid overflow.
• Compatibility: Perfect for popular tumbler brands like Yeti, Tervis, and Engel