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We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
Updated: 2026-09-27 · 6 min read · Independent comparison
• Perytong Sleep Headphones — biggest strength: a genuine 3-in-1 Bluetooth 5.4 headband that doubles as an eye mask and sports sweatband, with 40 mm drivers, Active Noise Cancellation and up to 14 hours of playback.
• Perytong Sleep Headphones — biggest trade-off: it's a soft fabric wearable, not a hard shell, so it protects your ears and hair but isn't built to shield anything from drops.
• casmilee Bone Conduction Headphone — biggest strength: a hard 1680D Oxford nylon and EVA foam case with a reflective logo and a carabiner, made to survive life in a gym bag or on a bike rack.
• casmilee Bone Conduction Headphone — biggest trade-off: it's a case and nothing else. There's no audio hardware inside, so it's only useful if you already own bone conduction headphones.
• Pick Perytong if you want to listen in bed, on a run or on a plane without anything pressing into your ears.
• Pick casmilee if you've got Shokz, Raycon, TOZO or similar open-ear headphones and want to stop them rattling around loose.
The Perytong Sleep Headphones are built around one idea: sound without pressure. The speakers sit inside a soft fabric band made from fabric and spandex, and the ear cups are adjustable so side sleepers can line them up with their ears and then roll onto a pillow. In my opinion that adjustability is the whole point — most over-ear and in-ear designs punish you the moment you turn your head at night. With 40 mm composite dynamic drivers covering 20 Hz to 20,000 Hz, plus Active Noise Cancellation, this is a device for masking a snoring partner, a noisy hotel or a busy street while you drift off.
Beyond sleep, it's a surprisingly practical workout band. The fabric is breathable and sweat-proof, it handles light rain, and you can pull the speakers out and machine-wash the band — a real advantage over earbuds you can never fully clean. Bluetooth 5.4 gives a stable connection with a claimed range of around 43 feet, so you can leave your phone on the nightstand and walk to the kitchen. Battery-wise, the 200 mAh cell charges over USB-C in roughly 1–2 hours and delivers up to 14 hours of playback or talk time, which comfortably covers several nights or a long-haul flight. Controls are physical push buttons, which I prefer at 2 a.m. over touch panels you have to guess at.
Who should buy it: side sleepers, travellers, meditators, office workers who want discreet background audio, and anyone who wants one accessory for sleep, naps, jogging and calls. Who should skip it: people who want maximum audio fidelity for critical listening, and anyone who needs a hard protective case rather than a soft wearable. It's also worth noting the band is one size in spirit — it's designed as an adult wearable, and the dust blue finish is the only colour listed.
Read the name carefully, because this one trips people up: the casmilee Bone Conduction Headphone is a storage case, not a pair of headphones. What you get is a hard shell built from rugged 1680D Oxford nylon with shock-absorbing EVA foam, sized to fit bone conduction headphones from Shokz (OpenRun Pro, OpenMove, OpenSwim Pro) and compatible with Raycon, CPTEA, CXK, TOZO and LuVant models. The inside is lined with soft anti-scratch material, and elastic dividers plus internal mesh pockets keep the headphones, charging cable and ear hooks separated instead of tangled in a knot.
The outside is where the design earns its keep for athletes. There's a military-grade 360-degree carabiner that clips to a backpack, belt loop or bike rack, and a high-visibility 3M reflective logo so the case catches light on night runs. The green gradient finish is a deliberate style choice rather than plain black utility. The EVA and Oxford combination is meant to shrug off drops, moisture, dust and scratches, which is exactly the kind of abuse a case takes when it lives at the bottom of a gym bag.
Who should buy it: runners, cyclists and gym-goers who already own open-ear bone conduction headphones and want them protected between sessions, plus anyone who keeps losing cables and ear hooks loose in a bag. Who should skip it: anyone expecting audio hardware, and anyone with a headphone shape that isn't a bone conduction or open-ear design — this is a tailored fit, not a universal pouch. It carries a 2-year warranty, the same coverage window Perytong lists for its band.
• Best for sleep and side sleeping → Perytong Sleep Headphones. The adjustable speakers and soft fabric band are designed for lying down; a hard case obviously isn't.
• Best for protecting gear you already own → casmilee Bone Conduction Headphone. EVA foam, Oxford nylon and anti-scratch lining are built for impact and moisture.
• Best for battery life → Perytong Sleep Headphones. Up to 14 hours of playback from a 200 mAh battery, recharged in about 1–2 hours over USB-C.
• Best for running and cycling safety → casmilee Bone Conduction Headphone. The 3M reflective logo and 360 carabiner are aimed squarely at low-light activity.
• Best for workouts in the rain → Perytong Sleep Headphones. Sweat-proof, breathable fabric with removable, washable speakers.
• Best for travel organisation → casmilee Bone Conduction Headphone. Elastic dividers and mesh pockets keep cables and ear hooks sorted.
• Best as a gift for a bad sleeper → Perytong Sleep Headphones. It's pitched for insomniacs, meditators and travellers, and works as a headband, eye mask and headphones in one.
• If you want the most versatile single purchase → Perytong Sleep Headphones, because it's the only one of the two that actually plays audio.
For most people reading this comparison, I'd buy the Perytong Sleep Headphones. It's a complete product — Bluetooth 5.4, adjustable 40 mm drivers, ANC, 14 hours of playback, washable fabric — and it covers sleep, travel and exercise in one item. The casmilee case is genuinely well made, but in my opinion it only makes sense as an add-on for someone who already owns bone conduction headphones and wants them kept safe between runs. If that's you, it does its one job very well. If you're starting from nothing, Perytong gives you far more to work with. Either way, check the current price on Amazon before you commit, since that's the one thing that can swing the decision.
No. Despite the name, it's a hard storage case for bone conduction headphones. It fits Shokz OpenRun Pro, OpenMove and OpenSwim Pro, and is compatible with Raycon, CPTEA, CXK, TOZO and LuVant models. You need to own the headphones separately.
Yes — that's its main purpose. The speakers are adjustable so side sleepers can position them over the ears, and the fabric and spandex band sits flat against the head. Active Noise Cancellation helps mask background sound while you fall asleep.
The 200 mAh battery delivers up to 14 hours of music or talk time, and a full charge takes roughly 1–2 hours via the USB-C port. That's enough for several nights of use or a long flight.
It's designed for the common bone conduction and open-ear shapes listed above, with elastic dividers to hold them plus cables and ear hooks. If your headphones are a very different size or style, the fit may be snug rather than ideal.
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