In reply to NathanP:
Good advice Nathan, thanks a lot. After reading your post I researched internet how other people put the yeti gaiters on. After a short struggle and few bruised finger tips I have managed to put them on. Still thinkingthese should be L size, but they are on now and look like they gonna stay there for good
For the reference, there are instructions I followed from a website:
"shove toe through front bit, get heel on, turn front rand inside out, put toe of boot on floor push thumbs inside turned out rand and puuuuuuuuuush like hell, then flip over to finish, if quite easy, then recommend pull up toe rand, clean up boot, apply glue and reseat rand"
Thanks a lot again.