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We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
Updated: 2026-10-01 · 7 min read · Independent comparison
• Dehailey's biggest strength: It is a sleep mask and a pair of headphones in one, with 100% light blocking, a 3D contoured eye cavity and 15 hours of Bluetooth 5.4 playback.
• Dehailey's biggest trade-off: It has no active noise cancellation. It blocks light completely, but sound blocking comes only from the mask fabric and speaker placement.
• Ertuly T33's biggest strength: Hybrid ANC with dual microphones that neutralizes up to 98% of disruptive sound, plus 48 hours of total playtime from the charging case.
• Ertuly T33's biggest trade-off: It is an in-ear bud, so it does nothing for light. If you need darkness, you still need a separate mask.
• Who Dehailey is for: Side sleepers who want total darkness and private audio in one wearable, and who mainly need to mask sound with their own music or white noise.
• Who Ertuly T33 is for: Anyone whose real enemy is noise — a snoring partner, a busy street, a humming appliance — and who wants active cancellation plus a sleep mode that mutes alerts.
Dehailey takes the eye mask you already own and wires it. The 3D contoured eye cavity lets your eyes move freely without pressure, and the brand claims 100% light blocking — which, for a shift worker or anyone sleeping next to a window, is the whole point. Inside the mask sit 15MM high-sensitivity dynamic drivers tuned for Hi-Fi stereo, and the ultra-thin audio modules can be slid around to line up with your ears. Bluetooth 5.4 handles pairing with any Bluetooth device, the battery charges in one to two hours, and you get up to 15 hours of playback — enough for a full night at moderate volume.
The fit story is genuinely thoughtful. The hook-and-loop strap covers head circumferences from 18 to 26 inches, and the brand specifically says it is easy to adjust without catching hair. The fabric is cotton with skin-friendly memory foam, breathable enough to stay cool overnight. And because it is built for side sleepers, the thickened side padding and thin audio module are meant to remove pressure from your ear and face when you roll onto your side.
Who should skip it: anyone whose problem is sound, not light. There is no ANC here. If your partner snores loudly or you live over a main road, the mask dampens a little but does not cancel. In my opinion, Dehailey is the better pick when darkness is the priority and your audio is the noise blocker.
Ertuly T33: Who It's For
Ertuly attacks the problem from inside your ear canal. The T33 uses dual-microphone Hybrid ANC that the brand rates at up to 98% noise neutralization, aimed squarely at snoring, traffic and appliance hum. A triple-tap cycles between ANC and Transparency Mode, so you can shut the world out at night and let it back in when you need to hear something. Sleep mode, triggered by four quick taps, mutes all alerts and disables accidental touch input — a small feature that matters a lot when you are shifting on a pillow and don't want a random tap to blast an alarm.
Battery is where the T33 pulls away. You get up to 8 hours of playback per charge, and the charging case extends that to 48 hours total. A 1.5-hour USB-C top-up plus an LED indicator on the case means you are rarely guessing about power. The buds themselves are about 3 grams each with a 13mm dynamic driver, an IPX6 sweat and water rating, and an in-ear bud shape in jet black plastic. Bluetooth 6.0 gives stable, low-latency pairing within 10 meters and auto-pairs when you open the case, and ENC microphones keep calls clear. You can run both buds for stereo or a single bud for calls, and media controls are touch-based.
Who should buy it: side sleepers who need real noise cancellation, people who share a bed with a snorer, travelers on planes and trains, and anyone who also wants the same buds for workouts thanks to IPX6. Who should skip it: anyone who needs total darkness, since the T33 does nothing about light, and anyone who dislikes things sitting inside their ears all night.
• Best for blocking noise → Ertuly T33. Hybrid ANC rated up to 98% is the only active noise cancellation in this pair; Dehailey has none.
• Best for blocking light → Dehailey Sleep Headphones. 100% light blocking with a 3D contoured eye cavity that lets your eyes move freely.
• Best for battery life → Ertuly T33. 8 hours per charge and 48 hours total with the case beats Dehailey's up to 15 hours.
• Best for side sleepers who hate ear pressure → Dehailey Sleep Headphones. Thickened side padding and a thin audio module are designed to remove pressure on the ear and face.
• Best for side sleepers who want in-ear isolation → Ertuly T33. Roughly 3-gram buds with soft ear tips are built for all-night comfort in the ear.
• Best for workouts and sweat → Ertuly T33. IPX6 protection; the Dehailey mask is cotton and memory foam with no water rating.
• Best for calls → Ertuly T33. ENC microphones plus single or dual bud use; Dehailey is positioned as a listening and sleep device.
• Best all-in-one sleep setup → Dehailey Sleep Headphones. Mask and headphones in one wearable, adjustable from 18 to 26 inches, nothing separate to lose.
If I had to pick one for the specific job of noise blocking, I would buy the Ertuly T33. Active noise cancellation is the only feature here that genuinely removes sound rather than covering it, and the 48-hour case, sleep mode and Bluetooth 6.0 make it the more capable night-time tool. I would choose the Dehailey Sleep Headphones instead if my real problem were light and I wanted music and darkness in a single wearable without anything inside my ears. In my opinion, noise blocking is the deciding keyword between these two — and on that keyword, Ertuly wins.
how to block out noise with headphones
There are two routes here. Passive blocking uses a physical barrier — Dehailey relies on mask fabric and speaker placement, which muffles but does not cancel. Active blocking uses microphones and anti-noise signals, which is what the Ertuly T33 does with Hybrid ANC rated at up to 98%. For loud, constant noise like snoring or traffic, active cancellation is the more effective approach.
are there noise cancelling headphones for sleeping
Yes, and the Ertuly T33 is one: it combines Hybrid ANC with a sleep mode that mutes alerts and blocks accidental touches, plus roughly 3-gram in-ear buds designed for side sleepers. It has a 13mm dynamic driver, IPX6 sweat resistance and Bluetooth 6.0. Dehailey Sleep Headphones are also made for sleeping, but they are a mask-and-speaker design with no ANC at all.
is it safe to wear noise cancelling headphones while sleeping
Comfort and fit matter more than anything else here. The T33 is built with lightweight in-ear buds and soft ear tips for side sleeping, and its sleep mode disables touch input so you are not woken by accidental taps. Dehailey instead uses a breathable cotton mask with memory foam and an adjustable strap. Follow each brand's fit guidance, keep volume sensible, and stop using either if you feel pressure or discomfort.
what are the best noise cancelling sleep headphones
On the specs alone, the Ertuly T33 is the stronger noise-blocking option: Hybrid ANC up to 98%, 48 hours of total playtime, 8 hours per charge, sleep mode and IPX6. The Dehailey Sleep Headphones are the better choice if you want light blocking and audio in one mask, with 100% light blocking, 15 hours of playback and side-sleeper padding. Match the pick to whether noise or light is your main problem, then check the current price on Amazon before deciding.
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