ALXCDTriple Flange Ear Tip, 6 Pairs S/M/L Size Triple Three Flange Noise Isolation Silicone Earbuds Tips with 4mm Connector Hole, Fit for Most in Ear Earphone (Black)[S/M/L]

I've purchased several replacement tips for my Sony WF 1000 XM4 IEM's as the originals are a hybrid foam and will wear out eventually.I've tried spinfit, comply and other cheaper options these are the best I've used by a considerable margin perfect fit comfort and audio quality is enhanced if you want to get the best out of your XM4 iem's these are a must buy.