Retailer of science and education toys
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Keeping my daughters hands warm some very cold spring days so far!
Lovely toasty hands :) Recomended product
very fast and accurate
Very quick delivery. Great communication from website
Great place to get stuff that simply isn't available anywhere else!
Very useful in the cool seasons.
These don't continue to produce heat for half an hour. I would say, rather, that they become warm, and may remain warmish for up to 20 mins.