[This review was collected as part of a promotion.] So I purchased this for -temperatures and wind chills that produce frost bite in minutes. The shellaclava is very warm, fit is tight for me, and if you wear glasses it may cause them to fog endlessly. I purchased anti fog treatment for my glasses but still had fogging issues. All that aside I did not develop frost bite, I only use this in extreme cold as I find the garment to restrictive for general cold weather wear.
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