Adeep winter sockseamlessly woven from the samePrimaLoft-Silkhigh performance thermic thread, offeringprotection from extreme cold while minimizing volume. The Be Love Seta is designed with ahigh-density padded foot-bedfor reducing conductive heat loss through the sole of the shoe. Features the same Achilles protection pad as all other models in the range. Please note that this PrimaLoft-Silk thread blend will shrink slightly (though not enough to necessitate wearing a larger size). For ultimate zero-crease contoured fit we recommend cold washing the sock before first use.