Prepare for the coldest climates with Extreme Heat - Cold Weather Socks from World Source Manufacturing, Inc. Engineered to withstand temperatures as low as -50 degrees, these socks are essential for survival in harsh conditions. As a leading import manufacturer catering to C-stores, truck stops, grocery, and gift stores across the US, Canada, and Mexico, we guarantee top-notch quality in every pair. Made for extreme cold -50 degrees. Excellent Item. Ensure your customers' feet stay warm no matter the weather.