Review on Men'S & Women'S 3M Thinsulate Insulated Winter Ski Mittens OZERO Heated Glove Thermal For Snow Work by Rashid Summers

54 years of Minnesota winters gives me the authority to rate these as adequate for an outdoorsy winter. I'd say they are good to about 15F for extended periods of time and lower for shorter period. They are very comfortable, soft, light and durable. I found them durable enough for handling a season of some dead car batteries, skiing tow ropes, log splitting. Great bargain for what you get.