Thanks for the tips Tom. I am going to test run the mitts soon and probably be ready with some hand warmer packets. The Mercury mitts do not have dedicated warmer pockets but they do have Velcro attached removable liners so I can drop a warmer packet in the palm or back of hand. Biggest problem of course is, if my hands get chilled while out of the mitts they will not generate enough heat on their own to regain proper circulation and feeling. Therefore Im not sure any amount of insulation will keep them warm without artificial heat.

Just for a comparison hiking last weekend in lower 20's my wife's hands were toasty in her gloves and in my other less insulated mitts but my fingers were numb in both. And that's not really cold weather. frown

jimmyb