Yeti gaiters are good but you need to have a very stiff sole for them to stay in place. Mine are superglued to a pair of plastic mountaineering boots that are not suitable for anything other than mountain walking. In terms of fitting I would take the boots to one of the following Cotswold camping, Field and Trek or Taunton Leisure which have stores around the UK. They also do mail order but I would phone in advance and seek their opinion on what model would be compatable with the make and size of boot. I have always found cordura material as being the best, it is what motorcycle jackets are m