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We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
If you want a crush-resistant, water-resistant hard shell built specifically to protect a pair of kids' JBL JR 300BT on-ear headphones, choose Aenllosi Hard Carrying Case; if you need four pairs of lightweight, wired retro on-ear headphones you can hand out and forget about charging, choose JIANSHUILIAN 4.
• Aenllosi Hard Carrying Case — biggest strength: A molded EVA hard shell that is crush resistant, anti-shock and water resistant, with a mesh pocket for cables and small accessories.
• Aenllosi Hard Carrying Case — biggest trade-off: It is a case, not audio gear. There are no drivers, no cable and no headphones inside — you buy it to protect a device you already own.
• JIANSHUILIAN 4 — biggest strength: Four complete pairs of wired on-ear headphones in one pack, with an adjustable headband, a 3.5 mm jack and no batteries or charging to manage.
• JIANSHUILIAN 4 — biggest trade-off: Wired only, passive noise cancellation only, and the build is plastic, foam and metal rather than a hard protective shell.
• Who Aenllosi is for: Anyone who already owns JBL JR 300BT / JR 300 kids on-ear headphones and wants them to survive a backpack.
• Who JIANSHUILIAN 4 is for: Families, classrooms or cassette-player fans who want several spare pairs of headphones ready to plug in.
The Aenllosi Hard Carrying Case is a single-purpose product, and I mean that as a compliment. It exists to hold one specific thing: JBL JR 300BT / JR 300 kids on-ear wireless headphones. The shell is made from EVA — ethylene vinyl acetate — which is the same family of material you find in a lot of crush-resistant protective cases. Aenllosi describes it as crush resistant, anti-shock and water resistant, which covers the three things that actually kill kids' headphones: being sat on, being dropped, and being rained on in a school bag.
Who should buy it? Parents whose kids carry JR 300BT headphones to school, on trips or between houses. The hard shell plus the blue color and solid sport-themed finish make it easy to spot in a bag. Who should skip it? Anyone who doesn't own those specific headphones, and anyone expecting headphones in the box. The listing is clear that it's the case only — device and accessories are not included. If you're shopping for actual audio gear, this isn't it.
JIANSHUILIAN 4: Who It's For
JIANSHUILIAN 4 is the opposite kind of product: it's four pairs of orange and black retro on-ear headphones in one package. The design leans hard into a vintage cassette-player aesthetic, and the wired stereo connection is the whole point — no batteries, no charging, just a 3.5 mm jack and a push-button control. Each pair weighs about 2 ounces, which is genuinely light, and the adjustable headband is meant to fit a range of head sizes comfortably over long listening sessions.
The audio specs are modest but concrete: 32 ohm impedance, a 5-inch dynamic driver, and a frequency response starting at 20. On-ear and over-ear placement with a round ear cup shape, plus passive noise cancellation — meaning the foam and the physical seal do the blocking, not electronics. The enclosure is plastic, foam and metal. That's a lightweight, everyday build, not a ruggedized one. There's no hard shell here, so these live loose in a bag or drawer rather than in a crush-proof box.
Who should buy this? Families who want a spare pair for every kid, teachers who need several sets for a listening station, and anyone with a cassette player or retro hi-fi who likes the look. The four-pack format is the real feature — you're not buying one good pair, you're buying four usable ones. Who should skip it? Anyone who wants wireless freedom, active noise cancellation, or a single premium pair. And anyone who needs protection first should look elsewhere, because these are headphones, not a case.
• Best for protecting JBL JR 300BT / JR 300 headphones → Aenllosi Hard Carrying Case. It's literally built for that device.
• Best for getting multiple pairs of headphones at once → JIANSHUILIAN 4. Four pairs versus a case with no headphones in it.
• Best for durability against bumps and splashes → Aenllosi Hard Carrying Case. Crush resistant, anti-shock and water resistant EVA shell.
• Best for no charging, ever → JIANSHUILIAN 4. Wired 3.5 mm connection, no battery involved.
• Best for storage of small accessories → Aenllosi Hard Carrying Case. The internal mesh pocket is designed for exactly that.
• Best for classrooms and families → JIANSHUILIAN 4. A four-pack with adjustable headbands fits a range of head sizes.
• Best for travel weight → JIANSHUILIAN 4. Around 2 ounces per pair, versus roughly 150 g for the case alone.
• Best for kids' backpacks → Aenllosi Hard Carrying Case. Hard shell plus a kid age range, sized for on-ear kids' headphones.
In my opinion, these two aren't really competitors — they solve different problems, and the right pick depends entirely on what's missing from your setup. If you already own JBL JR 300BT or JR 300 headphones, I'd buy the Aenllosi Hard Carrying Case. A crush-resistant, water-resistant shell with a mesh pocket is a cheap way to stop a kid's headphones from dying in a backpack, and it's purpose-built for that exact model. If you need headphones — several of them, wired, ready to go — I'd buy JIANSHUILIAN 4. Four pairs with adjustable headbands and no charging is a genuinely useful format for a family or a classroom. Price matters here too, so check the current price on Amazon before you commit.
FAQ
what are the best open ear headphones
Neither product here is an open-ear design. Aenllosi is a hard case for JBL JR 300BT / JR 300 kids on-ear headphones, and JIANSHUILIAN 4 is a four-pack of wired on-ear/over-ear headphones with passive noise cancellation. If open-ear is a must, neither of these fits the brief.
On-ear headphones rest on the ear rather than around it, which keeps them light — JIANSHUILIAN 4 weighs about 2 ounces per pair. The trade-off is less isolation than a full over-ear seal, and JIANSHUILIAN 4 relies on passive noise cancellation only, so loud environments will still get through.
are open ear headphones good
That depends on what you want. Open-ear designs let ambient sound in, which suits running and cycling. The products on this page are closed on-ear and over-ear types instead: Aenllosi protects JBL JR 300BT / JR 300 headphones, and JIANSHUILIAN 4 uses a 3.5 mm wired connection with passive noise cancellation.
what are the best in-ear headphones
Neither of these is in-ear. Aenllosi is a protective EVA case, and JIANSHUILIAN 4 is a set of four on-ear/over-ear wired headphones with round ear cups. If you specifically want in-ear buds, you'll need to look at a different category entirely.
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