Thank you very much for your reply!   Today I tried to remove the sleeves but they seem stuck to the IEMs. I tried to twist and pull but the things wouldn't come off! Have you had the same issue with your Shure IEMs?

Hello all,   I am new to this forum.  I just graduated from Etys ER4Ps to Shure SE535s, which I find to be very good.   I'm trying to determine which sleeves to use (Shure or third-party) to obtain the best noise isolation on the SE535s.  Currently I am using the sleeves that came on...