Sealskinz Runton Waterproof Cold Weather Mid Length Sock with Hydrostop - Navy Blue / Red / Large Navy Blue/Red Large

Waterproof and breathable - three layer construction for warmth, durability and waterproofing Comfort - merino wool lining for moisture control, insulation and comfort. Flat toe seams prevent rubbing Hydrostop - a silicone-like (although it is silicone-free) elastic taping around the inside cuff of the sock. This added protection reduces the chances of water dripping down your leg into your sock Zonal elastication for added support Please note that due to the close bond between sock cuff and skin, over prolonged use, some people may experience minor skin irritation due to the Hydrostop barrier rubbing against the skin. For those who experience any irritation, we recommend that Hydrostop socks are only used outdoors and not for a prolonged period of time.