Power Hydration Launches Tethered-Cap Alkaline Bottle

The 1-liter bottle uses a closure that stays attached after opening, a design already required across the European Union.

Updated on Nov. 9, 2026 in Consumer Goods

Photograph of a clear one-liter water bottle with its cap hinged open and attached by a tether, resting on pale concrete with condensation on the glass. — Power Hydration has launched a 1-liter alkaline water bottle with a tethered cap that stays attached after opening, a design already required across the European Union. AI Illustration. Upload story photo >

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Power Hydration has launched a 1-liter alkaline water bottle featuring the Twist & Flip tethered closure from Closure Systems International. The company becomes the first U.S. brand owner to adopt the closure.

Why it matters

Tethered caps are already required across the European Union, and Power Hydration says it adopted the design ahead of anticipated California regulation. The move signals that U.S. beverage makers may begin adapting packaging to similar rules.

The 1-liter bottle is made from 100% rPET and uses a 28mm closure that can incorporate up to 100% post-consumer recycled content. The source does not indicate sales volumes or pricing for the product.

The players

Power Hydration

A Los Angeles-headquartered alkaline water brand that became the first U.S. brand owner to adopt the tethered closure.

Closure Systems International

A closure manufacturer whose Omni mini XP 28mm Twist & Flip closure is used on the Power Hydration bottle.

The details

The consumer twists the cap open, flips it back while drinking, and closes it again, with the cap remaining connected to the bottle throughout. The closure is dimensionally interchangeable with existing industry closures, and a QR code on the bottle links to information about the design.

July 2024: Tethered caps become required across the European Union.
November 9, 2026: Power Hydration launches the 1-liter bottle with the tethered closure.

Industry Shift

Following the European Union's tethered-cap requirement that took effect in July 2024, Power Hydration's U.S. launch extends the design into American packaging. The company's adoption ahead of anticipated California regulation positions it as an early mover in the domestic market.

Consumers buying the 1-liter Power Hydration bottle will find a cap that stays attached after opening, rather than a separate piece that can be lost. The design works with existing closure systems, so the change is designed to be noticeable in daily use rather than requiring new habits.

The takeaway

Tethered caps are moving from European mandate to American shelf, and the design requires no new habits from consumers who already reseal bottles. Watch packaging choices on your favorite drinks as regulation spreads.