O'Neill Heat 3mm Socks

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Keep your toes warm and your feet cozy with th O'Neill Heat 3mm Socks. These socks are great for layering with round toed booties, keeping your feet toasty on the coldest days. You can also pair them with any type of swim fin in cool to frigid water to get a snug fin fit and warmer toes. Made with no sole or tread they will slide into booties or fins easily for an extra layer of insulation.

O'Neill has always put their best foot forward when it comes to innovative product invention and design. These comfortable neoprene socks are no exception.

Product Features

  • Strapless, Ssip-on design
  • Lightweight fluid foam neoprene
  • Flatlock seams
  • Helps prevent chafing and blistering


XS (5-6), S (7-8), M (9-10), L (11-12), XL (13-14)

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This product is backed by a warranty from the manufacturer. Click below for details on the warranty policy for O'Neill products.


If you are not 100% satisfied with your purchase you may return it for a full refund, or exchange within 30 days of receiving your order.

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