SILAIRA Sleep Journal
Side sleeping changes everything a mask touches.
A sleep mask can look soft on a product page and still feel different once it meets a pillow. Start with the contact points: temple area, edge profile, strap tension, coverage, and material evidence.
Shop the Ensō silk sleep mask →
See current colors, dimensions, materials, and availability.
Three checks before you read the specs.
Specs matter, but side sleeping is physical. Before comparing words like silk, Momme, or blackout, look at where the mask touches the pillow and face.
01. Temple Area
Avoid bulky hardware or hard edges near the pillow side. Low-profile construction matters more than a long feature list.
02. Strap Reality
Adjustable straps give tension control. Fixed elastic avoids buckle hardware but cannot be manually tightened or loosened.
03. Coverage, Not Bulk
Enough coverage around the eyes is useful. Extra bulk can fold, shift, or feel more noticeable against a pillow.
Use close-up evidence, not broad comfort claims.
For a side sleeper, the most useful product evidence is specific: surface, edge, thickness, strap structure, dimensions, and care. A material name alone cannot prove fit, comfort, or light coverage.
| Surface | Mulberry silk on both outer surfaces. |
| Filling | 100% mulberry silk filling. |
| Size | 20.5 x 9 cm, approximately 8.1 x 3.5 in. |
| Strap | Fixed elastic; not manually adjustable. |
Keep the limit visible: the Ensō mask is designed to help reduce distracting light, but it does not promise complete blackout or universal fit.
Confirmed SILAIRA Details
The Ensō mask, stated plainly.
22 Momme mulberry silk on both outer surfaces, 100% mulberry silk filling, approximately 28 g, fixed elastic strap, and Champagne / Black color options. These are product facts, not fit guarantees.
View current Ensō product details →
Use the product page for the latest specifications, colors, and availability.
Image note: the polished visuals on this article are for page presentation only. Product facts should still be verified against current SILAIRA specifications.
Questions worth answering before buying.
Is silk automatically better for side sleepers?
No. Silk can provide a smooth surface, but shape, seams, tension, pillow firmness, and personal preference also matter.
Does 22 Momme guarantee complete darkness?
No. Momme refers to silk fabric weight. Light coverage also depends on shape, filling, construction, nose area, and facial fit.
Should I choose an adjustable strap?
Choose based on your priorities. Adjustable straps offer tension control; fixed elastic avoids buckle hardware. Neither design is universally best.
Can a sleep mask treat insomnia?
No. A sleep mask is a comfort accessory, not a treatment for insomnia or another medical condition.
Reviewed by the SILAIRA Editorial Team
Fact-checked against current SILAIRA product specifications
Updated August 16, 2026