I like the 4x4 Handwarmers and throw them in the bottom of my waders.
I will activate two and throw them in my waders as I'm getting dressed and put two fresh ones in right before I put my waders on.
NRA Life Member
Me: "The .45 GAP was an answer to the question nobody asked."
Trooper pal: "Says the guy who thinks .38 Super and 10mm are viable pistol calibers and gets mad when Wal-Mart doesn't have them."