Echo Forty — 40 oz Hydrogen Water Tumbler

The Flask's larger sibling — a 40 oz portable tumbler that generates molecular hydrogen on demand, in one of the largest portable formats available.

Who this is for

• People who found the Flask too small for a full day
• Anyone who already carries a 40 oz tumbler and wants that habit to do more
• Gym bags, long drives, job sites — hydrogen without a countertop

Who it's not for

• Anyone wanting hydrogen at the tap — that's the Echo Flow
• Anyone wanting the smallest, most pocketable option — that's the Echo Flask
• People expecting filtration. Like the Flask, it infuses; it does not purify.

By the numbers

• Capacity: 40 oz
• Generates molecular hydrogen on demand
• Portable and rechargeable
• Free shipping within the continental US

Frequently asked questions

How is this different from the Flask?

Capacity, mainly. The Flask is the compact everyday bottle; the Forty is 40 oz for people who don't want to refill and re-run a cycle through the day.

Does it filter water?

No. It infuses hydrogen into water you put in. Start with filtered, distilled or reverse-osmosis water.

Can I add electrolytes or drink mix?

No. As with the Flask, anything other than plain water interferes with electrolysis and may affect your warranty.

From the founder

If you already carry a 40 oz tumbler everywhere, this is the least disruptive way to add hydrogen to your day — you are not adopting a new habit, just upgrading one you already have. Echo has built hydrogen equipment since roughly 2009, they manufacture and service their own machines, and they answered every regulatory and warranty question I put to them without hedging. That is why the line is here.

Backed by

• Echo has manufactured hydrogen equipment since approximately 2009
• In-house technical team handles testing and repairs
• Free shipping within the continental US, absorbed by InfraCore