Made from tough high quality 5.0mm "CR" neoprene. NOTE: be wary of buying socks made by "SVR" (polyester) neoprene which is cheaper but is not as durable, or as warm as "CR".  "SVR" is also highly flammable!
Additional sock panel for extra shaping and fit.
Seams are glued and stitched for extra durability.
Non-slip ripple sole.