Who doesn't like a great bootie!?

The best neoprene sock / bootie on the market - the Argos 2mm sock.

It is super comfortable and are made both left and right foot specific. 

They are multi paneled an have a great slickskin ankle seal to keep water out:

The sole has GREAT traction with little rubber treads which REALLY stops the foot from moving while inside the fin:

I got mine at: 

CanAmUWHGear.com

Also available at Neptonics.com