HotHands Hand Warmers – Long Lasting Safe Natural Odorless Air Activated Warmers – Up to 10 Hours of Heat – 3 Pair

Amazon.com Price: $1.99 (as of 29/03/2021 11:11 PST- Details)

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SAFE, NATURAL LONG-LASTING HEAT – Odorless, Disposable, Single-Use Item, Do Not Apply Directly to The Skin. TSA Approved. Made in the USA using domestic and imported materials.
TO ACTIVATE – Remove warmer from outer package, shake to activate. Warmer heats up in 15-30 minutes. If heat decreases, expose warmer to air and shake. After use, dispose with regular garbage. Ingredients will not harm the environment.