Review on 🎧 COMPLY Comfort T-500 Memory Foam Earbud Tips (Assorted, 3 Pairs) - Compatible with KZ ZS10, ZST, ZSN, ZSX, ZS5, Moondrop Starfield, 64 Audio U-Series, CCA C12, FIIO FH7, F9 Earphones, and More by Jacki Reichmann

The first thing I do when I get new headphones is replace the stock rubber tips with COMPLY. I have COMPLY headphone tips that I paid $11 and $200 for. In terms of improving isolation and keeping you in your ears while walking or exercising, it's worth a few bucks for each pair of headphones. The tricky part with COMPLY is the size of both the tip for your ear and the matching hole. tips. I would say I have medium or small pierced ears and the medium ones fit best and the small ones fit well. Even a large one will work in a pinch due to the flexibility. As for the fit of the headphones; The T-500 sizing seems to fit most headphones I have, from no-name to Sennheiser. If the rack really is a custom size (some Plantronics have a silly shape), the T-500 should fit. Measure and visit the COMPLY website, but it's difficult to tell 3mm or 4mm pins apart.