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If you want a complete, self-contained sleep earbud that hides in your ear and plays music all night, choose INSONIXN SK26; if you need fresh silicone tips to restore a pair of JBL Endurance Race earbuds you already own, choose Klowcok Ear Tips Replacement.
These two products sit in completely different categories, which is the first thing to understand before you pick. One is a finished pair of tiny Bluetooth earbuds built for sleeping. The other is a pack of replacement eartips — no electronics, no battery, no sound of its own. The right answer depends entirely on whether you need a new listening device or just a new set of tips for the device you already have.
• INSONIXN SK26 — biggest strength: A genuinely tiny, lightweight in-ear bud (0.1 oz) with Bluetooth 5.3, active noise cancellation, touch controls and a charging case that extends total use to 24 hours.
• INSONIXN SK26 — biggest trade-off: It's an all-in-one electronic product, so it only makes sense if you actually need new earbuds — not if you're just refreshing an existing pair.
• Klowcok Ear Tips Replacement — biggest strength: Nine pairs of soft silicone tips in three sizes (S/M/L, three pairs each), washable and easy to swap, specifically shaped for JBL Endurance Race TWS earbuds.
• Klowcok Ear Tips Replacement — biggest trade-off: It's strictly an accessory. It makes no sound, holds no charge, and is only useful if you already own compatible JBL earbuds.
• Who each pick is for: Choose INSONIXN SK26 if you want a new sleep-friendly earbud out of the box; choose Klowcok Ear Tips Replacement if your existing JBL earbuds need new tips.
The SK26 is built around one idea: an earbud you can forget you're wearing. The body is described as invisible and mini, and at 0.1 oz it's about as light as an in-ear bud gets. The rounded-tip shape and rubber-and-plastic enclosure are designed so that lying on your side doesn't create that painful pressure point you get from a normal earbud digging into your ear. That's the whole reason a product like this exists — sleep headphones live or die on side-sleeping comfort, and the design here is clearly aimed at that.
Inside, you get Bluetooth 5.3 for a stable wireless connection, a dynamic driver covering 20 Hz to 20,000 Hz, and 32-ohm impedance — a standard, easy-to-drive spec that suits music, podcasts and sleep audio alike. There's active noise cancellation plus physical noise isolation, and the microphone is tuned to reduce background noise so calls come through more clearly in loud rooms. Controls are touch-based and centered on call management, so you're tapping rather than fumbling for buttons in the dark.
Battery is the other headline. The buds themselves are rated for roughly 4–5 hours of listening, and the charging case extends that to 24 hours — about five extra charges. A full charge takes around four hours per the battery spec, and the case uses USB-C. In practice: charge the case, wear the buds for a night, drop them back in, repeat. That's a realistic schedule for sleep use.
Who should buy it: side sleepers, light sleepers, people who want music or white noise overnight without bulky headphones, and anyone with small ears who finds standard earbuds uncomfortable or falling out. It's also handy for work or leisure if you want something nearly unnoticeable.
Who should skip it: anyone who already owns a pair of earbuds they like and only needs new tips. The SK26 is a full product, not a component — buying it to "fix" another pair doesn't make sense.
This is a maintenance product, and it deserves to be judged as one. The Klowcok set gives you nine pairs of silicone eartips — three in small, three in medium, three in large — made specifically to fit the JBL Endurance Race TWS earbuds. If your original tips have torn, gone missing, stopped sealing properly, or simply never fit your ear canal well, this is the cheap, sensible fix. Note the listing is honest about what it is: earbuds are not included, only the tips.
The material is soft, light silicone, and the tips are described as durable and washable. That matters more than it sounds. Silicone tips collect earwax and oils, and being able to rinse them and let them dry keeps both hygiene and sound quality in good shape. A worn or dirty tip stops sealing, and a bad seal is the single biggest reason earbuds suddenly sound thin or quiet.
The three-size spread is the real value here. Fit is personal — one person's medium is another's small — and having three pairs of each size means you can experiment, find your seal, and still have spares. The tips also provide noise blocking, which is a passive benefit: a proper silicone seal physically blocks outside sound, which is exactly what you want from an earbud tip.
Who should skip it: anyone who doesn't own JBL Endurance Race earbuds. These tips are made for that model. If you have different earbuds — or no earbuds at all — this pack isn't the answer for you.
Side-by-Side: Which Should You Choose?
• Best for side-sleeping comfort → INSONIXN SK26. The 0.1 oz mini body with rounded tips is designed to avoid pressure when you lie on your ear.
• Best for replacing worn or lost tips → Klowcok Ear Tips Replacement. Nine pairs across three sizes is a straightforward, targeted fix.
• Best for long overnight use → INSONIXN SK26. Roughly 4–5 hours per charge plus a case that stretches total use to about 24 hours.
• Best for fitting your exact ear size → Klowcok Ear Tips Replacement. S/M/L in triplicate lets you dial in the seal rather than accept one size.
• Best for wireless audio and calls → INSONIXN SK26. Bluetooth 5.3, active noise cancellation and a noise-reducing microphone for clearer calls.
• Best for hygiene and upkeep → Klowcok Ear Tips Replacement. Washable silicone you can rinse and reuse, or simply swap when a tip wears out.
• Best if you already love your current earbuds → Klowcok Ear Tips Replacement. Don't replace a working product — just refresh the part that wears out.
• Best if you have no earbuds at all → INSONIXN SK26. The Klowcok pack has no electronics, so it can't play anything on its own.
In my opinion, most people searching this comparison already own earbuds and are trying to decide whether to repair or replace. If that's you and your earbuds are JBL Endurance Race TWS, I'd buy the Klowcok Ear Tips Replacement first — a fresh, correctly sized silicone seal often restores the sound and comfort you thought you'd lost, and nine pairs means you're covered for a long time. But if your problem is that your current earbuds hurt when you sleep, fall out, or simply aren't made for overnight use, tips won't solve that. Then I'd buy the INSONIXN SK26 — it's a purpose-built sleep earbud, and that's a different job entirely.
Before you decide, check the current price on Amazon using the button on this page, since value shifts and only you know your budget.
FAQ
No. They're made for the JBL Endurance Race TWS earbuds specifically. If your earbuds are a different model, these tips may not seat or seal correctly, so check compatibility before buying.
The buds are rated for about 4–5 hours of listening, and the charging case extends total use to roughly 24 hours, which works out to about five extra charges. A full charge takes around four hours, and the case charges over USB-C.
They can improve the seal and fit of compatible JBL earbuds, and silicone is soft and light. But they don't change the shape or bulk of the earbud itself, so they won't make a standard earbud into a side-sleeping design the way the INSONIXN SK26 is built to be.
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