They fit pretty well you just shake them and insert them into "warmer pocket" if your boots have them or just place the foot warmer inside the top of the boot, above the toes so it provides warmth but doesn't bunch up underfoot.
Answered on 10/21/2013 4:11:45 PM by Avid Boarder from On the Mountain
I ordered in January 2012, and these expire in 2014.
Answered on 1/24/2012 12:00:00 AM by Prod. Spec. Ryan from Sierra Trading Post
I've been ordering these for the last five years and there are always carryovers from one year into the next. I've never opened a pack that did not warm up, but I do notice that they may not last the 6 to 8 hours. Warmers that I've carried around in my bag become useless and I put that off to possible punctures and whatever happens in our bags on a daily basis.
Answered on 3/1/2012 12:00:00 AM by Diane, in da Bronx from Bronx, NY