FJ ProDry Extreme Crew Socks The FJ ProDry Extreme Crew Socks with Dri-Lex Moisture Control Technology quickly lifts moisture and vapor off of your skin allowing for a drier, more comfortable sock whatever the temperature or activity. Additionally, the Lycra®/ Spandex material provides superior stretch recovery and FootJoy reinforces the heel of its socks by double-layering the heel area which provides support and cushioning in a known high abrasion areas. Features: 1 pair Stays put, stays up!