O'Neill Heat Sock 3MM Hero With a classic mid-calf fit

With a classic mid-calf fit and one-size-fits-most design

The new FuseLock system provides a rock-solid connection for increased responsiveness

Intuitive design for all ability levels

The ACME 1107 4-Blade 13

Blem Description: Out of the original box

O'Neill Heat Sock 3MM Hero With a classic mid-calf fitThe O'Neill Heat Socks are basically a neoprene sock. There's no tread or no bottom sole, just 3MM of neoprene material designed to keep your feet warm in even the coldest water temperatures. The best part about the O'Neill 3MM Heat Socks is how versatile they are. They work great all alone for wakesurfing, but can also be inserted inside a pair of O'Neill booties for an extra layer of insulation. Another popular use case is wearing them inside your