The Blue eye Squids have drilled holes at the top of the lenses which is meant to reduce fogging.
I thought it was a bit of a d!cky gimmick, but it actually does work and I get virtually zero fogging.
Works for me.
EDIT:
I forgot to add that (as recomended) I put 2 discrete spots of supaglue on the L+R edge of the lenses to hold them into the frame - for wipeout protection. Have had no dramas in 3 yrs.
The squids have a non-elastic band that can be done up as tight as you like, so possibly less likely to get ripped orf ya noggin too. I wear a helmet (Protec) so not much chance of losing em for me anyway.