LC-dolida Bamboo Cotton Bluetooth Sleep Mask with Detachable 3D Cups

Cups: The LC-dolida Bamboo Cotton Bluetooth Sleep Mask combines a contoured blackout eye mask with wireless audio and two detachable cup inserts. Its reported comfort is mixed, so side sleepers who are sensitive to pressure around the ear should weigh that feedback against the mask’s adjustable-use concept.

At a glance

Two detachable 3D cups are described: a bamboo-cotton cup and a breathable cup, intended to allow switching and easier cleaning.
Bluetooth audio with built-in microphones is claimed. The listing also gives 96kHz audio and 900Kbps transmission figures.
Contoured cups are described as 32mm deep with a 15° angled fit.
The listing claims six-layer blackout construction and 99.99% light coverage.

Price

$29.98Save 40%

Reference price: ~~$49.99~~

Price checked: Nov 14, 2026

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Pros and cons

Pros

A spare detachable cup could be useful for alternating use or travel, according to the listing.
Built-in microphones are included alongside the claimed Bluetooth audio, allowing calls as well as listening.
Customer feedback reports positive impressions of sound quality and battery life.

Cons

Some customer feedback reports ear discomfort when sleeping on that side, which may matter particularly to side sleepers.

Technical specifications

3 specifications

Identity
Brand	LC-dolida

Package details
Package dimensions and weight	8.94 x 4.53 x 2.24 inches; 7.41 ounces
Battery	1 Lithium Ion batteries required. (included)

What to know before buying

Listing details to confirm

Bluetooth is described as “5.4” in the title but “5.4 Bluetooth” is not stated consistently in the feature wording, which instead says “5.4 Bluetooth” only in some related listings and “5.4” is not verified here. The feature also claims “96kHz audio” and “900Kbps transmission” without further context. Treat these performance figures and the Bluetooth version as listing claims rather than confirmed specifications.

Who is it for?

A good fit for

People who want a sleep mask with Bluetooth audio and a built-in microphone.
Travelers who may find a second detachable cup useful.
Users seeking a contoured mask with a stated blackout design.

Less suited to

Side sleepers who need assured ear comfort, since customer feedback on comfort is mixed and includes reports of ear pain.
Buyers who require independently verified blackout or audio-performance measurements.

LC-dolida Bamboo Cotton Bluetooth Sleep Mask with Detachable 3D Cups · photo 2 — Additional product photo 2

Customer reviews on Amazon

4.4 / 5 · 185 ratings

5 stars71%71%
4 stars12%12%
3 stars9%9%
2 stars5%5%
1 star3%3%

Customer feedback highlights perceived quality, sound quality and battery life, but comfort is mixed, including reports of pain in the ear against the pillow. Durability and effectiveness are also described as mixed. For side sleepers, that comfort concern is especially relevant because the mask has built-in audio speakers and contoured cups. The overall rating distribution leans positive, but ratings alone do not establish why customers felt as they did.

Positive themes

Customers report favorable impressions of product quality, sound quality and battery life.

Mixed feedback

Comfort feedback includes both comfortable experiences and reports of pain in the ear against the pillow.
Feedback on durability and effectiveness is mixed.

Frequently asked questions

What comes with the mask?

The feature listing claims two cups, two noise-canceling earplugs and a portable storage bag. A separate explicit box inventory is not provided, so confirm the selected listing’s package contents.

Can the cup inserts be removed?

The listing describes two detachable 3D cups, one bamboo cotton and one breathable, and says they are intended to support easier cleaning and swapping.

Is it comfortable for side sleeping?

The listing presents its contoured cups and angled fit as suitable for side sleepers. Customer feedback on comfort is mixed, including reports of pressure or pain on the ear against the pillow.

How effective is the blackout design?

The listing claims six-layer blackout construction and 99.99% coverage. These are manufacturer claims, not independently verified measurements.