Heat Holders Boy's Hat with Pompom and F "ustlingen

How they work
The Heat Holders achieve their outstanding heat-retaining properties through a completely unique three-stage knitting process.
The acrylic yarn used for the Heat Holders feels like cashmere and is a highly sought-after but difficult-to-source product, with limited production capacities worldwide. This superior yarn gives the Heat Holders their unmatched soft and comfortable cashmere feel.
Many technological innovations were required for the famous long-looped thermal pile in our socks, and our machines had to be completely retooled.
Our strictly secret unique brushing process maximizes the amount of air pockets that trap warm air inside the sock.