The Seal Skinz Mid Weight Mid Length Socks with Hydrostop offers great fitting comfortable & waterproof socks but now with the extra protection of a Hydrostop silicone free gripper around the cuff to fit more securely around your leg to massively reduce the chance of water ingress through the top making these a fantastic pair of waterproof socks for strenuous outdoor activities & for working outdoors These socks offer an excellent level of comfort thanks to the close fitting seamless pattern elasticated insteps & light padding along with the use of the merino wool lining so whatever activities you are enjoying you can be confident that your feet will stay dry & comfortable all day long The new Hydrostop technology from Seal Skinz gives a much more secure fit through the use of a soft silicone free elastic tape which is located near the top of the cuff & has high elastic properties so it feels very natural once you have the sock on & creates more of a barrier to reduce the risk of water running down your leg it also ensures your sock stays in place while you are enjoying the great outdoors