Make sure you get good ones

Reviewed by Hikergirl from Colorado on Sunday, January 26, 2014
I have purchased these many times from Sierra and other places. The ones from STP never stay warm for more than an hour. Even though the expiration says 2014 or 15 - they get lukewarm. My friend got some recently dated 2017. They stayed warm while sking for about 4 hours. I'm pretty disappointed with Grabber and the mixed results. Wish there was another option you could count on.
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