SealSkinz Mautby Waterproof Ankle Socks Black Gray X Large MFPN=11654068.02 }Shimano Dura Ace R9100 Hollowtech II }Shimano Dura Ace R9100 Hollowtech II English Bottom Bracket and carbon construction promises multi day racers a worry free existence—meaning there's no fiddly proprietary parts that could leave you stranded in a Cape Epic or Breck Epic campsite list style position:outside With a Hydrostatic Head of >20000mm and the addition of Hydrostop™ technology which creates a barrier between your skin and the sock to help prevent water from coming in through the top of the sock our socks stay waterproof under the toughest of conditions