XCEL 5mm Infiniti Tek Split Toe Boot with thermospan neoprene for warmth in the most extreme conditions.
The XCEL Infiniti Tek Boots have an arch strap and a pull tab on the back to help get them on and off in the cold. All in all a top of the line boot.

Size Guide

PLEASE NOTE THAT WHATEVER UK SIZE YOU REQUIRE, THE BOOT SENT WILL SHOW ONE ABOVE, AS THEY ARE US SIZES WHICH IS ALWAYS ONE SIZE ABOVE YOUR NORMAL UK SIZE I.E A UK 10 WILL RECEIVE BOOT SIZE US 11 

The boots will feel quite tight at your normal shoe size, but a snug fit is important.  However, like all neoprene, they will stretch and loosen a little over time.