Four Sigmatic x ALEX Insulated Tumbler

This guksi (or kuksa) is a handmade cup crafted by the Sami people of Lapland from a birch burl. It is the coolest thing I own. It makes every sip feel authentic.

Alex Bottle

ALEX x Four Sigmatic

Sustainable Sips

Keep your Mushroom Coffee warm (or cold) AND sustainable while giving back this holiday season. 100% of all profits of this limited edition Four Sigmatic x ALEX Insulated Tumbler go to Protect Our Winters (P.O.W.). Each 12 oz. reusable tumbler will help save our planet.

Alex Bottle

Donating profits

Let’s Protect Our Winters

  • 100% of all profits go to P.O.W. (Protect Our Winters)
  • Limited Edition: Only 500 tumblers available
  • 12 oz. / 354 mL
  • Keeps drinks hot for 3 hours and cold for 8 hours
  • Splash-proof lid
  • Wide-Mouth for easy cleaning
  • BPA-Free premium stainless steel
  • Fits some cup holders

Reviews from people who don’t normally write reviews

“Reishi, lions mane,chaga and cordyceps mushrooms contain powerful properties”

Dr. Mark Hyman

Physician and New York Times bestselling author

"My Morning Routine"

Four Sigmatic's Lion's Mane is an indispensable part of my morning routine.

Chelsea Yamase

Influencer, speaker & art director

“Instrumental”

I can honestly say that Four Sigmatic adaptogens and mushroom blends have been an integral and instrumental component of my success equation.

Rich Roll

Ultra-endurance triathlete & author

Chelsea Yamase

Influencer, speaker & art director

Rich Roll

Ultra-endurance triathlete & author

Frequently Asked Questions

You got questions. We got answers.

And if we’re not sure—we’ll find out. We love an excuse to hit the stacks.
Alex Bottle

MONEY-BACK GUARANTEE

Feel the difference or it’s free.

We put our money where our benefits are. That’s how much we believe in our product. And if you’re not into it—totally fine. More for us.

Honest reviews

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Morning Routine

Complete Your Daily Routine

A better way to power up.

Coffee and Lion’s Mane get your brain going. No more sacrificing your afternoon for your morning.

EVERYDAY MAGIC™

The statements made on this website have not been evaluated by the FDA (U.S. Food & Drug Administration). The products sold on this website are not intended to diagnose, treat, cure, or prevent any disease. The information provided by this website or this company is not a substitute for a face-to-face consultation with your physician, and should not be construed as individual medical advice..