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| Originally Posted by thewisestfish and then inside each wet suit glove shoved in an activated Hand warmer (those plastic pouches filled with gel that have a little metal disk inside that activates them - £5.99 for 2 from Milletts). |
Glad to hear that this works for you. It may be worth doing your experimentation in small steps though. AFAIK whilst the gel is non-toxic, the speed of the reaction increases as the presure does. Be careful not to burn yourself if you are going deeper than you've taken them before.
Simon A