The 40oz stainless steel tumbler has taken over in 2025, it makes sense. Big size, keeps drinks hot or cold for hours, and it actually looks good sitting on your desk or in your car cup holder. But the real question is: what drinks are actually worth keeping in your tumbler? Here are some of my go-to favorites that taste great and stay fresh all day.

1. Iced Coffee & Cold Brew

If you’re a coffee person (like me), Fill your tumbler with iced coffee or cold brew, add some more ice, and perhaps a little milk or syrup, and you basically have the feeling of coffee.Bonus: no watered-down coffee, even after hours.

2. Smoothies & Protein Shakes

Heading to the gym? Or just trying to sneak more fruit into your day? The big tumbler is perfect for smoothies and protein shakes. The wide mouth means you can throw in powders, frozen fruit, or yogurt without making a mess. And if you’re using a straw lid, sipping is easy and spill-free.

3. Infused Water

Sometimes plain water just doesn’t cut it. Drop in some lemon, cucumber, mint, or berries, and suddenly water feels like a treat. stainless steel doesn’t hang onto weird flavors the way plastic bottles do. One fill in the morning can keep you refreshed all day.

4. Hot Tea or Herbal Drinks

Tea lovers, this for your. Whether you’re into green tea at work or chamomile before bed, your tumbler keeps it warm for hours. I’ve even taken mine on winter walks—still hot halfway through.

5. Ice-Cold Water

Sometimes all you want is cold water. Toss in some ice, screw the lid on, and it’ll stay cold without sweating all over your desk. Perfect for long commutes, office days, or outdoor trips.

At the end of the day, your 40oz tumbler is more than just a cup—it’s basically a hydration sidekick. Coffee, smoothies, tea, or just plain water, it handles it all while keeping your drinks just the way you like them. Once you start using it, you will love it.