How do air-activated hand warmers work?

Opening the outer package exposes the pouch to air. Oxygen triggers an iron-based chemical reaction inside that gives off heat. The pouch warms within minutes and stays warm for several hours.

How long do they stay warm?

Most disposable warmers of this type hold heat for several hours, then cool gradually. Cold, windy conditions and tight pockets can shorten that. Carry a spare pair for a full day out.

Can I use them in gloves and boots?

Yes. The flat pouch fits inside a glove or a boot. Keep a thin layer of fabric between the warmer and bare skin, and avoid pressing it directly against skin for long periods.

No. Each pouch is single-use. Once the reaction ends, the warmer is spent and should be thrown away.

Can I take them on a plane?

Air-activated warmers are generally allowed in carry-on and checked bags, but rules vary by airline and country. Check with your airline before flying.

How should I store them?

Keep them sealed in the outer package until use. Once the package is opened, the warmers start reacting and will not keep.

Where is the Ouhoe Disposable Air-Activated Hand Warmers cheapest?

At Deal.ai, for $20.99, as of our latest check.

Free shipping on everything10% off your first orderNo account needed · Buy 2, save 10% · 3+, save 15%

Ouhoe Disposable Air-Activated Hand Warmers

Sold and shipped by Deal.ai

$20.99Free shipping

Buy 2, save 10% · 3+, save 15%

Extra 10% off your first order

Color: 10pcs

Arrives about Nov 21 – Dec 1, from a warehouse in China

30-day full refund: if you're not happy with it for any reason, or it never arrives, tell us within 30 days and we refund you in full. Shipping and refunds