- Our Most extreme cold water sock available
- Breathable, moisture-wicking, high loft, insulating polypropylene Polar Fleece inner lining
- Storm Proof 70 denier micro-ripstop water-resistant Taslon outer nylon facing
- Primaloft sandwiched between fleece lining and nylon facing
- Sole and heal are reinforced with a heavier nylon for durability.
- Complement this with the MK or MK3 Undergarments.
- Sock can be worn alone or with a very light polyester sock to minimize laundering.