My Tieks made a farting noise when I walked, so I previously bought Gekks to put in there with the little sock you can remove.  I noticed I quit wearing my Tieks as much because I couldn't just 'slip' them on anymore.

I removed the Gekks and it left a gross sticky residue.  I wish I wouldn't have used them at all.

Anyway, these inserts are perfect!  I wear a size 7 in Tieks and ordered size 38 inserts which fit my Tieks nicely.  My Tieks now feel better than they ever have!