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The Heat Holders Chris is a knee-high thermal boot sock built from a heavy bulk acrylic-blend yarn (acrylic, nylon, polyester, elastane) meant to trap warm air around the foot on cold days. It carries the same warmth and cushioning as the original Heat Holders crew sock but in an extra-long ribbed design that reaches up the calf, so it stays put inside tall boots. It suits people who work outdoors, walk in winter, or wear boots in cold weather. Against thinner wool or cotton boot socks, it offers more loft and bulk, but it is thicker, so it fits best in roomier boots.
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Lowest price we've seen: $18.89 on Nov 4 at Lyst. Tracked across 11 stores since Nov 4.
Owners rate the Chris boot sock highly, with 4.7 out of 5 from 207 ratings. Reviewers consistently describe warm, comfortable feet in cold weather and like the long length for boots.
The Chris is a ribbed boot sock in black from Heat Holders. It has the same warmth and comfort as the original Heat Holders crew thermal sock. The design is extra long, so it suits wearing with boots.
It is made from a specially developed heavy bulk yarn with extreme thermal qualities. The yarn helps keep feet warm on the coldest days. The fabric is a blend of acrylic, nylon, polyester and elastane.










