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We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
If you want memory foam that seals out noise and deepens bass while staying put in the charging case, choose JNSA Memory Foam Ear; if you need soft, light silicone tips that grip securely during sweaty workouts on JBL's sport line, choose NANLANFAN Replacement Silicone Ear.
• JNSA Memory Foam Ear — biggest strength: premium memory foam that expands to fill the ear canal, which helps with noise isolation and enhanced bass, and it's designed to fit in the charging case without removal.
• JNSA Memory Foam Ear — biggest trade-off: it's built for JBL's in-ear TWS shapes (Vibe 200TWS, Tune 130NC TWS, Live 300TWS, Free X), so it won't suit every earbud.
• NANLANFAN Replacement Silicone Ear — biggest strength: soft, ultra-light silicone in six pairs across S/M/L, with a secure fit that resists falling out.
• NANLANFAN Replacement Silicone Ear — biggest trade-off: silicone seals less aggressively than foam, so passive noise blocking is more modest.
• Who JNSA is for: listeners who want a snug, noise-isolating seal and richer low end on compatible JBL TWS buds.
• Who NANLANFAN is for: JBL Endurance sport users who need a grippy, sweat-friendly fit and spare pairs on hand.
This is a foam tip set, and foam behaves differently from silicone. It's made of high-quality premium memory foam, which means it compresses as you insert it and then slowly expands to fill the shape of your ear canal. That expansion is the whole point: it creates a fuller seal, and a fuller seal is what helps with noise cancelling, sound isolation and enhanced bass. If your current silicone tips feel like they're letting sound leak around the edges, foam is the classic fix.
Compatibility is specific here. JNSA lists these tips for the JBL Vibe 200TWS, JBL Tune 130NC TWS, JBL Live 300TWS and JBL Free X, plus other similarly shaped JBL true wireless in-ear models. One practical detail I like: the tips are designed to fit inside the charging case, so you can drop the earbuds in to charge without pulling the tips off first. That matters if you're the kind of person who charges daily and doesn't want an extra step.
You get three pairs in black — one each in S, M and L — plus a small plastic case to hold them. Note that this is eartips only; earbuds aren't included. Buy these if you own one of the listed JBL models and want stronger isolation, more grip and a bass-forward feel. Skip them if your earbuds aren't a JBL in-ear TWS shape, or if you prefer the slick, quick-in-and-out feel of silicone — foam takes a second or two longer to seat properly.
NANLANFAN takes the opposite approach. These are soft silicone tips, and silicone's job is to be light, flexible and easy. The ultra-light weight keeps the tip from dragging on the earbud, and the material flexes to sit comfortably without the slow expansion of foam. The key selling point is grip: the design is meant to fit securely so the tips won't fall out easily, which is exactly what you want when you're moving around.
The fit list is aimed squarely at JBL's sport and endurance family — the Endurance Peak 3, Endurance Peak II, Endurance Peak and Run 2 wired, plus the Race TWS earbuds. That's a line built for running, gym sessions and outdoor training, so a tip that stays planted matters more than maximum isolation. NANLANFAN also claims these block out unwanted noise for an exceptional audio experience, though silicone generally seals less tightly than foam, so expect decent passive blocking rather than a vacuum-like seal.
The package is generous: six pairs total across S, M and L, in black. That's more spares than JNSA's three pairs, which is handy if you lose tips often or want to keep a set in a gym bag. Buy these if you're on a JBL Endurance or Race model and want a light, secure, low-fuss fit with extras on hand. Skip them if your priority is maximum noise isolation and bass depth — that's foam territory.
• Best for noise isolation and bass → JNSA Memory Foam Ear. Memory foam expands to seal the canal, which the sheet ties directly to noise cancelling and enhanced bass.
• Best for workout grip → NANLANFAN Replacement Silicone Ear. Soft silicone built to fit securely so tips won't fall out easily.
• Best for charging convenience → JNSA Memory Foam Ear. Designed to stay on the earbud and fit in the charging case without removal.
• Best for spare pairs → NANLANFAN Replacement Silicone Ear. Six pairs versus three.
• Best for JBL Endurance / Race owners → NANLANFAN Replacement Silicone Ear. The fit list covers Peak 3, Peak II, Peak, Run 2 and Race TWS.
• Best for JBL Vibe / Tune / Live / Free X owners → JNSA Memory Foam Ear. Built for those exact in-ear TWS shapes.
• Best for lightweight, low-fuss comfort → NANLANFAN Replacement Silicone Ear. Ultra-light silicone is easy to insert and remove.
• Best for listeners chasing a fuller, warmer sound → JNSA Memory Foam Ear. The tighter seal is what foam is known for.
In my opinion, I'd buy the JNSA Memory Foam Ear if I owned one of its listed JBL models and cared most about blocking noise and getting punchier bass. The memory foam seal is the single biggest upgrade you can make to a pair of in-ear TWS buds, and the fit-in-case design removes the usual foam annoyance. But if I were running, lifting or training in JBL Endurance gear, I'd take the NANLANFAN Replacement Silicone Ear without hesitation — the secure silicone grip and six-pair count fit that lifestyle better. Match the tip to your earbud model first, then to how you listen.
FAQ
how to connect tws earbuds
how to reset tws earbuds
The exact reset steps vary by model, so check your earbuds' manual for the button or touch sequence. A common method is placing both buds in the case, then holding the case or bud buttons until the indicator flashes. A reset clears old pairings and often fixes one-bud-only audio issues.
how to pair tws earbuds
Put the earbuds in your ears, then open Bluetooth on your device and pick the model name. If it doesn't appear, remove the buds, return them to the case, close it, and try again. Once paired, most buds reconnect automatically the next time you take them out.
how to tws earbuds
Keep the charging case topped up, since most TWS earbuds power on when removed and power off when cased. Wipe the tips and nozzles regularly — foam and silicone both collect earwax, which quietly kills volume and seal. And if you're swapping to new tips, reseat them firmly so the fit stays secure.
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