These are Heat Holders' original thermal crew socks, built from a heavy bulk yarn with an intensively brushed inside that traps warm air against the foot. Heat Holders rates them at 2.34 TOG, which it claims makes them about seven times warmer than a basic cotton sock. The non-binding cuff avoids tight pressure points, so they suit people with cold feet or sensitive skin who want warmth without restriction. Against ordinary wool or cotton crew socks, they trade breathability and a slim profile for bulkier insulation.
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With 4.9 out of 5 from about 1,550 ratings, owners mostly describe these as genuinely warm and soft, and many buy them repeatedly for winter. The main complaints concern bulk in tight footwear and warmth that becomes too much in heated rooms.
The Heat Holders ORIGINAL Joshua is a crew-length thermal sock for men. It has a 2.34 TOG thermal rating and is 7X warmer than a basic cotton sock. The crew height works with boots, shoes and sneakers.
Each pair is made from a specially developed heavy bulk yarn with extreme thermal qualities. The inside is intensively brushed to form a thick, soft layer that traps warm air against the skin.
The comfort fit is non-binding, with no tight bands or pressure points. The socks are machine washable and durable construction is designed to last season after season.
