The ThirtyTwo T32M Mitten is an insulated winter mitten for the days when snow falls wet and stays that way. Its 100% recycled shell is rated 20K for waterproofing and 20K for breathability, and taped seams close off the stitching around 100 grams of Thinsulate Featherless insulation. What Our Gearhead(R) Experts Are Saying:"The side zip frees my fingers for small jobs like clearing a stuck zipper pull or fishing a trail map out of a pocket. The rest of the mitten stays closed around my palm, so it never comes off. Zipping up drops my hand straight back into the insulation."