| not sure whether the custom fit ones make any difference to balance. I've been buying 40 pairs of the squidgy foam ones from e-bay for less than a fiver. I noticed it was taking longer and longer for my hearing to return to 'normal' after riding without them. My problem now is remembering to get rid of the 'used' ones and not leave them lying in the tankbag or in the pocket of my jacket....'nuf said !! | 
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