Extension Tube, Boost Tube for Tumbler, Matcha Stone Green

About this item

• ▶ Adds 20oz of Capacity. Each Extension Module instantly increases your 20oz modular tumbler to 40oz. Stack two modules to reach 60oz or more. No need to buy a separate large tumbler – just twist and expand.
• ▶ Premium 316L Stainless Steel. Superior to standard bottles, this extension module is forged from 316L stainless steel for enhanced corrosion resistance and purity, ensuring your water never has a metallic aftertaste.
• ▶ Extreme Thermal Retention: Stay refreshed all day long. The double-wall vacuum insulation technology keeps drinks chilled for 24 hours or hot for 12 hours, regardless of the outside temperature.
• ▶ Tool‑Free Installation & Full Disassembly. Attach or remove the module by hand in seconds – no tools required. Each module can be separated from the cup and lid for thorough cleaning. Top‑rack dishwasher safe.
• ▶ Built to Last 15+ Years – Expandable Investment. Instead of replacing your tumbler when you need more capacity, just add an extension module.