The ultimate cold weather boot these advanced technical Columbias are top of the line.Waterproof synthetic nubuck upper in an 8 inch height seam sealed with membrane constructionInsulated with 600g Thermolite; for severe cold weather protection down to -65 F / -54 CLace up front with rustproof hardware gussetted tongue and padded collarFleece topped Thermolite; heat keeping insoleHeavy Vibram; all terrain traction outsole more...
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