Stormr Waterproof Heavy Weight Men and Womens Stretchy and Comfortable 3mm Neoprene Sock with Reinforced Screened Bottom, Best Used for Freezing Waters, Ice Fishing or Fly Fishing neoprene Imported FISHING SOCK: Light weight sock made from 1.5mm thickness. COMFORT: High Stretch Premium Neoprene for the most comfortable sock. DURABLE: Reinforced screened bottom to protect your feet from the elements.