/ Not the foam. https://symbioeartips.com/manual-2 Those little adapters. Had a set of custom eartips with a 4mm hole. Used those with the adapters and they stayed on the westone um1 I had lying about. Without the adaptor they would of slid off, but with it they stayed on nice and snug (though came off occasionally). You would have to find out the nozzle length of the EE's and get the appropriate ones (seems spinfit do them as well if that helps). Downsides to tips are that they do make the earpiece stick out of your ear a bit more and can possibly change the signature a little.