Your Eureka tumbler - Base Bottle, Boost™, lids, or straws - is designed to endure with grace. Explore essential care insights here, and uncover deeper guidance on our Use and Care Instructions page to keep your sustainable companion flawless.
316L is premium, non-reactive stainless steel—resistant to corrosion and safer for long-term use. It’s the standard in medical and marine applications, and a step above common kitchen-grade steel.
Absolutely NOT. Every component is lead-free and BPA-free.
Of course. Every bottle and Boost™ is made to mix. You can add Base Bottles and Boost™ separately into your cart. Build your own palette.
NO. Never. Eureka Tumbler is not meant for microwaves or fridge.
Yes. The Base Bottle is dishwasher safe - top rack recommended.
NO. The Boost™ is hand wash only. Rinse gently. Treat it kindly.
Yes. One lid, seamless fit—for both Base Bottle and Boost™.
Each holds 20 oz. Start with one. Add as needed.
Yes. Twist on as many Boost™ as you need. Each Boost adds 20 oz to your total.
Yes, when properly assembled and closed. Tighten each thread. Twist until you feel the seal.
Yes. Hot coffee, tea, or infusions are welcome. We do not recommend carbonated beverages.
Yes. Eureka is designed to fit most standard car cupholders.
For bulk orders and custom engraving, please reach out to support@eurekalifestyle.com. Our team will be in touch.