Bought as ones that fitted me in store. £30 cheaper than goretex etc. I have abused these gaiters, still coming back for more! With recent snow very comfy. no snow leaked into my boots or up my leg. As with Adrian above, pop stud fastner was a pain. However do the gaiters up in sequence. Strap under foot arch. Wrap gaiter around, zip slightly and push lower press stud in. hook on lace then zip up and press velcro tight. then upper stud pressed in hard. Finally elastic on calf slightly tight. if the press stud pops, its TO TIGHT!
As I said top kit.