Our hand warmers are activated upon exposure to oxygen in the air when opened. Natural heat is then generated as oxidation of the content takes place.
Happyday hand warmers will dissipate heat from a range of 10 to 20 hours per package depending on the type of hand warmers.
As an ISO certified company, Happyday hand warmers are reliable and are based on well proven processes that enable consistency in delivering high quality products.
Our 10 hour warmers are widely used by the general public – enough time for light outdoor activity and sustainable durations.
The 16 hour warmers are the most popular amongst the more active people who spend quite a bit of their time outside.
And finally, 20 hour warmers are used by the most demanding of users who spend most of their day braving the cold: from couriers, construction, heavy recreation to the extremes of the military.
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