Handi Heat Adhesive Body Warmer, 30-Count

For a long time I found this to be the best product on the market. BUT, the last box I bought - mid-2013 or thereabouts? - was TERRIBLE quality because of inconsistency. I had started buying them in the box of 30 for over three years because I used them so often. But this last batch was very, very defective. Every third or fourth one DID NOT HEAT UP. My spouse uses them too and his experience and mine were the same, all the way through the box of 30.Because of the very high cost of shipping, I NO LONGER can recommend these. I apologize to those who bought them based on my previous 5-star rating - I honestly thought I had edited my previous review to reflect our bad experiences with the last box!