We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
Updated: 2026-09-29 · 7 min read · Independent comparison
If you want two cases in one pack for JBL Vibe 100 TWS or Wave 100 TWS buds, choose DAYJOY 2; if you need a single fitted sleeve for Moondrop Pudding TWS buds, choose FJIASTB Case. These are protective silicone covers, not earbuds — and that single fact decides the whole comparison.
• DAYJOY 2 biggest strength: a two-pack of soft silicone sleeves (pink + green) for JBL Vibe 100 TWS and Wave 100 TWS, each with its own carabiner keychain, so you can cover two cases or keep one as a spare.
• DAYJOY 2 biggest trade-off: it only fits JBL Vibe 100 TWS and Wave 100 TWS — it is not a universal sleeve, and the earbuds themselves are not included.
• FJIASTB Case biggest strength: an integrated flip-cover design in dark green that won't accidentally pop off, plus a keychain and a wrist strap in the box.
• FJIASTB Case biggest trade-off: one case only, and it fits Moondrop Pudding TWS exclusively — the listing is explicit that other models won't work.
• Who each pick is for: DAYJOY 2 for JBL owners who want a color change, a grip upgrade and a spare; FJIASTB Case for a single Moondrop Pudding owner who wants one cover with two carrying options.
The DAYJOY 2 is a two-pack of soft silicone sleeves built around two specific JBL models: the Vibe 100 TWS and the Wave 100 TWS. That's the first thing to internalize. This is not a generic pouch that "sort of" fits — it's molded for those two buds, and if your case is anything else, it simply isn't the right buy. The earbuds are not part of the package either; you're buying the skin, not the device.
What it does well comes down to material and daily handling. The silicone is soft and flexible, which is exactly what you want in a sleeve that gets shoved into pockets and bags. DAYJOY describes it as scratch proof, shock proof and antiskidding, and the anti-slip part matters more than people expect — a glossy charging case slides off a café table, a silicone-wrapped one tends to stay put. There's a cutout at the bottom so you can plug in the charging cable without peeling the cover off, which is the one feature I'd refuse to give up in any case like this. And the anti-lost carabiner clips to a handbag or backpack, which is the practical answer for running, hiking or any outdoor session where a loose case means a lost case.
Who should buy it: JBL Vibe 100 TWS or Wave 100 TWS owners who want grip, drop protection and a bit of color, and who like the idea of a backup. Who should skip it: anyone with a different earbud model, and anyone who wants a bare, minimal case with no clip hanging off it. The carabiner is a feature, but it's also a small dangling object — if that bothers you, this isn't your pick.
FJIASTB Case: Who It's For
The FJIASTB Case is a single soft silicone cover made for the Moondrop Pudding TWS charging case — and only that model. FJIASTB is unusually direct about it: the listing tells you to check your device before buying because it won't suit other earbuds. I respect that. Too many accessory listings hedge, and then buyers end up forcing a sleeve onto the wrong case and wondering why the lid won't close.
The design story here is the integrated flip cover. Rather than a sleeve with a separate piece that can work loose, FJIASTB uses one integrated construction so the flip cover stays attached instead of accidentally falling off. If you've ever had a two-piece cover where the top half slowly migrates off the hinge, you'll understand why this matters. It's a small engineering choice that removes a daily annoyance.
Material-wise it's soft silicone described as skin-friendly and harmless, waterproof and shockproof — the same family of protection as the DAYJOY, aimed at scratches, scuffs and short drops. Charging works without disassembly, which is table stakes for a good case and FJIASTB handles it. The finish is dark green with a nature-themed look, which is a quieter, more muted aesthetic than the pink-and-green DAYJOY pair. If you want your earbuds case to read as understated rather than bright, that's a point in its favor.
The package is one case, one keychain and one wrist strap. That wrist strap is the detail that separates it from a lot of budget covers: clipping a case to a bag loop is one way to carry it, looping a strap around your wrist is another, and having both options covers gym sessions, walks and commuting. FJIASTB also mentions 24-hour after-sales customer service, which is worth noting for anyone who worries about buying an accessory from a smaller brand.
Who should buy it: Moondrop Pudding TWS owners who want one well-fitted cover with an integrated lid and two ways to carry it. Who should skip it: JBL owners (wrong fit entirely), anyone who wants multiple colors in one purchase, and anyone hoping a single case will cover several different earbud models.
• Best for JBL Vibe 100 TWS or Wave 100 TWS → DAYJOY 2. It's molded for those two models specifically.
• Best for Moondrop Pudding TWS → FJIASTB Case. It's built for that model and warns you off everything else.
• Best if you want two covers → DAYJOY 2. A pink and a green sleeve, each with a keychain.
• Best if you want one cover plus a wrist strap → FJIASTB Case. Keychain and wrist strap both included.
• Best for lid security → FJIASTB Case. The integrated design keeps the flip cover from falling off.
• Best for charging convenience → both. Each has a cutout or design that lets you charge without removing the cover.
• Best for outdoor clipping → both. DAYJOY uses an anti-lost carabiner; FJIASTB includes a keychain and wrist strap.
• Best if you're unsure about fit → check your exact model first. Neither case is universal, and buying the wrong one helps nobody.
One honest caveat: both are silicone sleeves, so both share silicone's habits. They add grip and absorb scuffs, but they don't make a case waterproof, and they can attract dust over time. Neither brand publishes drop-test figures, so treat "shockproof" as a reasonable description of soft silicone rather than a laboratory guarantee. If you care about what either costs today, check the current price on Amazon using the button on this page — I'm deliberately not quoting numbers here.
If I owned JBL Vibe 100 TWS or Wave 100 TWS buds, I'd buy the DAYJOY 2. Two sleeves for the price of one purchase, two colors, two keychains, and a spare for when the first gets grubby — that's the better deal for most people. I'd only pick the FJIASTB Case if I specifically owned Moondrop Pudding TWS and wanted its integrated flip cover plus the wrist strap. In my opinion, the deciding question isn't which case is "better" — it's which earbuds you actually have.
what is tws earbuds
TWS stands for "true wireless stereo" — earbuds with no cable between the left and right pieces. Both products here are cases for TWS earbuds, not earbuds themselves. The DAYJOY 2 fits JBL Vibe 100 TWS and Wave 100 TWS; the FJIASTB Case fits Moondrop Pudding TWS.
what is tws earbuds means
It means the two earbuds connect wirelessly to each other and to your phone, with no wire running between them. Because the buds live in a charging case, that case is the part people protect. That's exactly what both of these silicone covers do — they wrap the case, not the buds.
how much is tws earbuds
Earbud prices vary enormously by brand and model, and neither data sheet here lists a price for anything. What matters for this comparison is that you're buying an accessory, not the earbuds. Check the current price on Amazon for the case you want.
how to tws earbuds
If you mean pairing them: put both buds in the case, open it near your phone, and connect through your Bluetooth settings. If you mean protecting them: match the case to your exact model. DAYJOY 2 for JBL Vibe 100 TWS or Wave 100 TWS, FJIASTB Case for Moondrop Pudding TWS — nothing else fits.
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