THE HEAT COMPANY Insole Foot Warmers - 5, 10 or 30 Pairs - EXTRA WARM - 8 Hours of Warmth - Instant Heat - Air Activated - Purely Natural – Small, Medium, Large, X-Large

Took these to northern Norway in January and were effective. you can wrap up as warm as you like but if your feet or hands are cold it is not enjoyable. With these I opened them up, gave them a shake (probably completely unnecessary) then put in my shoes ten mins before putting them on. Kept feet warm without getting hot and lasted for hours. Pity they are throw away after one use but that's just how they work

Apparently amazing - saved my husbands feet when he cycled in the winter. Were still warm after a full day of riding, so thats at least 8plus hours? Easy to use, stays well in the shoes while cycling and stays warm. Excellant.

I have to say these are very good. Open them up and I choose to leave them for a couple of minutes to get plenty of air before putting them in my shoes. Always warm on any day and they do last a very long time with consistent heat throughout the day. Now this is not a big issue but, after wearing them for some time in all my different footwear I find they ride up at the heel to a point where they can be seen over the back of the shoes which means they are not in place at the front to keep your toes warm. I'm wondering about using duct tape to keep them in place whilst walking.

Great item keep your feet nice and warm for hours

Very good. Keep feet warm for hours in icy conditions

Brilliant at keeping my feet warm during long winter rides, was diagnosed with hashimotos last winter & this appears to be one of my side effects. I tried battery insoles & heated socks, all very intermittent, appreciate these are disposable but happy that I can still feel my toes by the end of the ride.

These are fantastic.

Nice for an hour but they don’t last longer than an hour

Dit had ik eerder moeten weten. Het maakt (bijna) niet uit hoe duur je schoenen of van mijn part snowboots zijn, bij stilstand krijg je vanzelf koude voeten. Met deze warmtezooltjes hou je je voeten echter goed warm. En met goed, bedoel ik dat de onderkant van je achterpootjes bijna in de fik staan. Perfecte oplossing als je lang buiten moet staan of op de motor zit.

Love these. I walk outside in the winter and these keep my feet warm the entire way.

Très efficace . Chaleur transmise au dela des 8 heures annoncés

Solette davvero comode e utilissime nei mesi invernali, scaldano molto e per molte ore...ideali per ciaspolate sulla neve dentro agli scarponi.

Los he comprado para días de mucho frío y la verdad es que cumplen muy bien. Tanto los calentadores de manos como los de pies se activan rápido y empiezan a dar calor al poco tiempo. El calor es constante y dura varias horas, suficientes para una jornada larga fuera de casa. Son fáciles de usar, no molestan y vienen bien presentados en sobres individuales. En el caso de los pies, se colocan sin problema dentro del calzado y no resultan incómodos al caminar. Para excursiones, eventos al aire libre o trabajos en exterior, van genial. En general, un producto muy práctico para el invierno y una buena solución cuando el frío aprieta de verdad.