I'm a glommitt fan myself -- you can fold the mitten top back when your hands get hot or you need to adjust something. I have both wool pairs and fleece/windblock ones. They're both pretty light.

Cabella's has a good variety of them -- just search on glommitts

My favorite were Smartwool ones but they've been discontinued.

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"I go to nature to be soothed and healed, and to have my senses put in order" John Burroughs