Great if you have small feet & old school vibram soles. - Grivel Air Tech Light Crampons

These are gorgeous crampons. But they won't fit for instance a Vasque Snowblime flexible winter boot, which have non-Vibram soles with a lot of "rocker" (curve) and big fat heels and large front "bumper." They are both too narrow and too short.

They are maxed out (last hole) & over stressed for length, addressing an old school leather, Euro size 44 (US 10.5) Vibram soled boot, so no they do not fit up to Euro 46 as advertised. Hated to, but I sent them back.

If you have any sort of traditional Vibram soled boot under size 10.5, these are fine. On a 10.5 they are overstressed as the boot flexes.

This review was written in the old system and had content requirements that are different than reviews written today.