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We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
Updated: 2026-09-26 · 7 min read · Independent comparison
• FLARE AUDIO Calmer — biggest strength: soft, flexible silicone in a one-size in-ear design that does not block volume, so you stay aware of your surroundings instead of feeling sealed off.
• FLARE AUDIO Calmer — biggest trade-off: it is not a speaker and not a traditional earplug. There is no Bluetooth, no music, and no real noise blocking.
• Piegricdiat Invisible Sleep Headphones — biggest strength: true wireless Bluetooth 5.3 earbuds built specifically for sleeping, with skin-soft silicone eartips, a sleep mode that disables the buttons, and an IPX6 rating.
• Piegricdiat Invisible Sleep Headphones — biggest trade-off: they are electronics. That means pairing, charging habits, and a bigger, heavier object in your ear than a passive silicone plug.
• Who each pick is for: Calmer suits the noise-sensitive person who wants to keep hearing the room. Piegricdiat suits the sleeper or swimmer who wants audio in their ears.
Calmer is the odd one out in the earplug aisle, and that is the whole point. It is a hollow, lightweight silicone tool that sits in your ear and redirects sound rather than sealing the canal. The claim from the spec sheet is specific: it reduces ear resonance, the thing that makes certain sounds feel sharp and stressful. Volume stays where it is. That is a very different job from noise reduction, and it is why Calmer describes itself as an alternative to traditional earplugs rather than a competitor to them.
In practice, that makes it a work-and-commute object. Offices with chatter, trains, busy streets, social settings where you still need to follow a conversation — these are the environments where "quieter but not muffled" actually matters. The soft silicone and the tiny 0.39 x 0.51 x 0.78 inch body mean it disappears into the ear and can be worn for long stretches without the pressure or occlusion you get from a plug that seals. It ships as a single pair in Soft Blue, one size.
Who should skip it? Anyone who wants silence. If your goal is to mute a snoring partner, a loud neighbour, or a plane engine, Calmer is the wrong tool — it deliberately does not block sound. Same goes for anyone who wants music, calls, or any kind of wireless audio. There is no battery here, no Bluetooth, nothing to pair. It is a passive silicone object and nothing more.
These are proper earbuds, and the design brief is written all over the spec sheet: sleep. The model is built around skin-soft silicone eartips and eartip caps with a true wireless shape, and the key detail for side sleepers is that you are not supposed to jam them into the ear canal. That matters more than it sounds. Most earbuds create soreness because they push against the canal wall; a design that sits at the entrance and stays small is what makes lying on your side bearable for hours.
The sleep mode is the smartest feature here. Once enabled, every physical button is disabled and you control playback from your phone only. If you have ever rolled onto an earbud at 3 a.m. and skipped a track or cranked the volume by accident, you know exactly why that exists. Bluetooth 5.3 handles the connection with the usual benefits — stable pairing, wide device compatibility, and no cable to tangle in. There is also a built-in noise reduction microphone for calls, and a "whale cavity" stereo surround tuning the brand claims for music.
Then there is the rugged side. IPX6 waterproofing is a genuine deep-water rating, and the spec sheet says the earbuds can be used underwater for more than six hours continuously, covering swimming, surfing and snorkeling. That is a rare claim for something sold as a sleep bud, and it broadens who this fits: swimmers, gym-goers, and people who want one pair for bed and the pool.
The trade-offs are the honest ones. This is electronics — you have to keep it charged, and at 1.6 ounces it is a real object in your ear, not a whisper of silicone. The beige colour is chosen to be discreet, but "invisible" is marketing shorthand, not a literal description. And if you want to stay aware of your surroundings, these are the opposite of what you need: they put audio between you and the room.
• Best for staying aware of your surroundings → FLARE AUDIO Calmer. It reduces resonance without blocking volume, so conversations and announcements still reach you.
• Best for falling asleep to audio → Piegricdiat Invisible Sleep Headphones. Bluetooth 5.3, a dedicated sleep mode, and a shape aimed at side sleepers.
• Best for noise sensitivity and focus at work → FLARE AUDIO Calmer. Built for offices, commuting and social environments where muffled sound is the problem.
• Best for swimming and wet use → Piegricdiat Invisible Sleep Headphones. IPX6 with underwater use stated at over six hours continuously.
• Best for zero maintenance → FLARE AUDIO Calmer. No battery, no pairing, no charging routine. Just soft silicone that goes in and comes out.
• Best for calls → Piegricdiat Invisible Sleep Headphones. A built-in noise reduction microphone is part of the spec; Calmer has no microphone at all.
• Best for people who hate things inside the ear canal → Piegricdiat Invisible Sleep Headphones. The design is explicitly built so you do not have to push the bud deep into the canal.
• Best for the smallest possible object in your ear → FLARE AUDIO Calmer. Under an ounce and smaller than an inch in every dimension.
In my opinion, the two products are not really competing — they solve opposite problems, and that is why the choice is easy once you name your actual need. If noise itself is what stresses you and you still need to hear the world, I would buy the FLARE AUDIO Calmer. Its whole design is built around that one job, and the soft silicone plus one-size in-ear fit makes it the more comfortable pick for all-day wear.
If your problem is silence at night, or you want music in your ears while you sleep, swim or train, the Calmer cannot help you at all. For that, I would buy the Piegricdiat Invisible Sleep Headphones. Bluetooth 5.3, sleep mode, the skin-soft silicone tips and IPX6 waterproofing make it the more capable product for anyone who wants audio, not calm.
what are the best earbuds to sleep in
For side sleepers, look for a small, soft-tipped design that does not sit deep in the ear canal, plus a way to lock the buttons so you do not trigger them while rolling over. The Piegricdiat Invisible Sleep Headphones match that brief with skin-soft silicone eartips, a true wireless shape and a sleep mode that disables every button. The FLARE AUDIO Calmer is not an earbud in this sense — it plays no audio.
Yes, and they are a distinct category from normal earbuds. The Piegricdiat model is built around sleeping specifically: soft silicone tips and caps, a compact in-ear shape meant to avoid canal pressure, and a sleep mode that hands control to your phone so accidental touches cannot change anything. It is also rated IPX6, so it survives sweat and water rather than just quiet nights.
how to put on silicone earbuds
Silicone tips are meant to sit at the entrance of the ear canal, not be forced deep, and that is exactly how the Piegricdiat buds are described — you do not need to push them into the canal. The FLARE AUDIO Calmer works differently: it is a single-piece silicone in-ear tool, one size, that rests discreetly in the ear to redirect sound rather than seal it. In both cases, a light, seated fit is the goal.
Do these two products do the same thing?
No. The FLARE AUDIO Calmer does not block or reduce volume and has no electronics — it is soft silicone designed to reduce ear resonance so noise feels less stressful. The Piegricdiat Invisible Sleep Headphones are true wireless Bluetooth 5.3 earbuds with a microphone, IPX6 waterproofing and a sleep mode. One is a passive comfort tool; the other is an audio device.
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