21-01-12, 12:55 AM
I find the foam ones fiddly to roll up and insert, the triple-flange type that E-A-R make seem easier and last longer. Just looked for a link and they appear now to be available only in the cord-linked version... though I suppose there's nothing to stop you cutting the cord off.
http://cpc.farnell.com/e-a-r/uf01000/ear...dp/HE32088
http://cpc.farnell.com/e-a-r/uf01000/ear...dp/HE32088