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
Ladyfriend: "I need help with the leaves in the yard"
Me: "Controlled burn?"
LadyFriend: "I forgot my Boy Scout turned into an infantry officer."