Two premium sleep masks at the opposite ends of design philosophy. The Manta Pro ($79) uses adjustable contoured eye cups to create a cavity of darkness around the eyes without touching the eyelids. illo (~$24-40) uses a full plush pillow wrap that conforms to the face, doubles as a travel pillow, and provides passive noise buffering. Both are premium relative to the budget market. Neither is universally superior.
Understanding which is right for you requires understanding not just what each product does but how your specific sleep position, face geometry, travel habits, and skin priorities interact with each design.
TL;DR
- Manta Pro is best for back sleepers, eyelash extension wearers, and people who want minimal-profile home use at the highest possible eye cup clearance
- illo is best for side sleepers, travelers who want one item to replace both a sleep mask and travel pillow, and anyone who needs passive sound buffering alongside darkness
- At $79 vs $24 (official offer), illo provides meaningfully more function at a fraction of the price for most buyers
- Blackout completeness under lateral pressure (side sleeping) favors illo’s conforming plush; under straight-back pressure (back sleeping), both perform well
- Neither has achieved NSF or third-party sleep health certification
Design Philosophy: Fundamentally Different Approaches to Darkness
The Manta Pro and illo solve the same problem, keeping light out of your eyes during sleep, through architecturally opposite approaches.
Manta Pro’s approach: structural cavity creation. The adjustable eye cups create a three-dimensional cavity around each eye. No material presses on the eyelid itself. The cups maintain their geometry independently of the fabric, providing consistent eye clearance regardless of how the mask is oriented. Light is blocked by the cup edges pressing against the face at the nose bridge and cheekbones.
illo’s approach: conforming surround coverage. The plush fill wraps continuously around the eye area, temples, and upper face. Rather than creating a rigid cavity, illo uses soft conforming material that adapts to the face’s contours under any pressure. Light is blocked through complete, gap-free soft contact rather than structural rigidity.
Both approaches are valid solutions to the blackout problem. The practical performance difference emerges when the mask is under lateral pressure (side sleeping, pressing against a pillow or window) and when the user’s face geometry doesn’t perfectly match the mask’s designed pressure points.
Blackout Performance: Position-Dependent Analysis
Back Sleeping
For back sleepers, both masks perform well. The Manta Pro’s eye cups maintain their geometry without lateral interference. illo’s plush fill rests against the face without gravity working against it. Neither mask has a significant performance advantage for dedicated back sleepers.
The Manta Pro’s structural rigidity may actually produce more consistent darkness for back sleepers with perfectly average face geometry, because the cup edges create a defined seal at specific pressure points. For some face shapes, this is ideal. For others, particularly those with less prominent cheekbones or an unusual nose bridge, the cups create gaps at the intended seal points.
Side Sleeping
Research on complete light blocking shows that even minimal light exposure during sleep suppresses melatonin and disrupts sleep quality, making seal integrity critical regardless of sleep position.
Side sleeping is where the two masks diverge most significantly.
When you press your face into a pillow on your side, the Manta Pro’s rigid cups encounter lateral force. Depending on the cup positioning, the spring tension of the headband, and your specific facial geometry, this lateral force can:
- Displace the cups from their optimal position, breaking the seal at the nose bridge or cheekbones
- Create uncomfortable pressure where cup edges contact the face under compression
- Allow light infiltration from the space that opens as cup geometry is maintained but contact is lost
illo’s plush fill handles lateral compression through material deformation rather than structural resistance. The plush compresses gently against the pillow, maintaining contact with the face across the full covered area rather than at specific cup-edge pressure points. Because the seal is created by soft contact rather than structural rigidity, it adapts to lateral pressure rather than resisting it.
In practical side-sleeping performance, illo’s design is superior for most side sleepers, particularly active ones who move during the night.
Eyelash Extensions: Where Manta Pro Wins
If you wear eyelash extensions, the Manta Pro is the clearly correct choice. Its adjustable eye cups are specifically designed to maintain complete clearance from the lashes, with no material of any kind touching the eyelid area.
illo’s plush fill is soft enough that it doesn’t press firmly on the eyelids, but it doesn’t provide the same deliberate engineering for complete lash clearance. The plush material has some contact with the areas surrounding the eye, and for extensions, any contact risk is problematic.
For eyelash extension wearers: Manta Pro. For everyone else: the eyelash consideration is irrelevant, and illo’s overall performance advantage for side sleeping and travel is meaningful.
Travel Utility: Not Even Close
illo functions simultaneously as a sleep mask, travel pillow, and cushion in a single product. When worn around the neck during travel, it provides soft skin-contact cushioning that competes favorably with most dedicated travel pillows.
The Manta Pro is a sleep mask. It has no travel pillow function whatsoever.
For frequent travelers who would otherwise pack both a sleep mask and a travel pillow, illo replaces both items with one product at a lower combined cost than most premium alternatives in both categories.
The real-world math:
- Alaska Bear silk mask ($18) + Cabeau Evolution travel pillow ($50) = $68 for two separate items
- Manta Pro ($79) + any travel pillow = $79+ for two separate items
- illo ($24, official offer) = one item that covers both functions
On pure value for travelers, illo is not close.
Passive Sound Buffering: illo’s Unique Advantage
The Manta Pro provides no sound buffering. It is a light-blocking device only.
illo’s plush fill provides meaningful passive attenuation of ambient sound, cabin hum on flights, hotel HVAC noise, street sounds, a partner’s breathing. This isn’t noise cancellation, but it is a real and perceptible passive effect that’s particularly valuable in travel contexts where the mask is most heavily used.
Research shows that participants using blackout masks experienced 20% improvement in overall sleep satisfaction and 33% decrease in tossing and turning compared to no-mask baseline, suggesting that environmental sensory management (both light and noise) contributes to sleep quality beyond light blocking alone.
Material and Skin Contact
Manta Pro: Cotton-blend cover. Serviceable but not especially premium for extended skin contact. The cup interior uses foam padding. No silk layer.
illo: Mulberry silk and modal interior. Mulberry silk creates 43% less friction than cotton, reducing sleep line formation and allowing the skin to glide without pulling or tugging. For daily users who are sleeping 7-9 hours with their face in contact with the mask, the material difference is meaningful: less friction means less contribution to fine line development around the eye area, better moisture retention for nighttime skincare products, and cooler feel.
The material advantage for daily home use belongs to illo.
Price Analysis: A 3x Price Difference
| illo | Manta Pro | |
|---|---|---|
| Price | ~$24 (official offer) / ~$40 (Amazon) | ~$79 |
| Travel pillow | Yes | No |
| Sound buffering | Yes (passive) | No |
| Silk interior | Yes | No |
| Side sleeping | Excellent | Variable |
| Eyelash clearance | Adequate | Designed for it |
At the official offer price ($24), illo costs approximately 30% of the Manta Pro’s price while providing travel pillow function, passive sound buffering, and silk-interior skin benefits that the Manta Pro doesn’t offer. Even at the Amazon price ($40), illo is half the cost with superior functionality for most use cases.
The Manta Pro at $79 makes most sense for buyers who specifically need the eyelash extension protection it offers. For everyone else, illo delivers more value.
Who Should Choose What
Choose illo if:
- You’re a side sleeper
- You travel and want one item for mask + travel pillow
- Passive sound buffering matters alongside light blocking
- Skin and hair quality from silk contact is a consideration
- Budget is any factor at all
- You need complete blackout that holds across sleep positions
Choose Manta Pro if:
- You have eyelash extensions requiring zero lash contact
- You are exclusively a back sleeper with average face geometry
- Minimal profile and weight is the primary concern
- Budget is not a constraint and you want the most premium mask for home-only back sleeping
Full illo review: illo Review.
