Just following up on this
The boots arrived and on closer inspection the right one seemed to have heavy material folds in the outer boot, the right boot was totally smooth on the inside, the ridges created pressure points on your foot even though the insulated boot
I contacted Mantel and eventually accepted it was a “faulty delivery” rather than a warranty issue, bit or a language barrier there I think
I have had to buy a second set and they will refund me when I return the first set including return carriage, or so I have been told
Currently waiting for second set to arrive in the next hour, once they are checked I’ll return the first set
Having to pay twice seemed strange but guess I can check the replacements and send them all back if there is the same issue…