Choose SB112 if recessed space around your eyes is your priority. Choose SB31 if you want a simpler wide wraparound silk mask. Both offer generous coverage and an adjustable hook-and-loop fastening; SB112 adds sculpted eye cups to the wraparound format. The right choice starts with how you want the mask to feel, not just which colour you like.
Wide silk comfort, with room to make it yours.
Discover the recessed eye cups of SB112, or compare all four silk mask styles to find your favourite way to wind down.
SB112 vs SB31: The Key Differences
“Wraparound” describes the broad band that goes around your head. “3D” describes the shaping around your eyes. A mask can have both features: SB112 combines a wide wrap with recessed eye cups, while SB31 is our simpler broad-coverage wraparound option.
On a phone, swipe the table sideways to compare both masks.
| Feature | SB112 | SB31 |
|---|---|---|
| Main reason to choose it | Recessed 3D eye space with a wide wrap | Broad eye and temple coverage in a simpler wraparound style |
| Fabric | 100% mulberry silk fabric, 19 momme | 100% mulberry silk on both sides of the main covering |
| Approximate dimensions | 70 cm total unfolded length × 12 cm width | 70 cm total length; front height up to 11.5 cm |
| Eye-area design | Sculpted, recessed eye cups | Wide coverage around the eyes and temples |
| Fastening | Adjustable hook-and-loop wrap | Adjustable hook-and-loop wrap |
| Choose and shop | View SB112 colours and current price | View SB31 colours and current price |
The 70 cm length is measured with the mask laid open, including its fastening ends. It is not a fixed head-circumference measurement: the ends overlap when you fasten the wrap.
What Do SB112’s 3D Eye Cups Change?
If your main frustration with a sleep mask is fabric brushing against your eyelids, SB112 is the design to explore first. Its interior has two recessed spaces positioned over the eyes. The surrounding contours provide structure around the eye area, rather than relying on a flat front pulled closely across it.
That is a different benefit from simply making a mask wider. Extra width can cover more of the temples; recessed cups create space in front of the eyes. SB112 combines the two, with a smooth silk surface to make the contact around the face feel soft and inviting.
Centre the cups over your eyes and keep the wrap comfortably relaxed so the shape has room to work. If you wear long lashes or extensions, assess whether the fabric stays clear as you turn onto your usual pillow. Our silk eye mask and eyelash-extension guide explains what to look for without confusing a soft fabric with guaranteed clearance.
For the broader design question, read contoured vs flat silk eye masks. This comparison focuses on choosing between our two wraparound models.
Coverage, Nose Fit and Fastening
Both masks offer a broad alternative to a traditional mask with a thin elastic strap. The wrap covers the eye and temple area, and the hook-and-loop fastening lets you adjust the overlap. There is no narrow adjustment buckle to position against your pillow.
SB112 has a shaped nose cut-out beneath the eye cups. Position that cut-out centrally, then settle the lower edge gently around the nose before fastening the back. SB31 also combines broad coverage with a shaped lower edge. In either design, a small change in position is often more useful than tightening the band when you notice a light gap.
Think of coverage and comfort as a pair. The aim is a darker, restful space with a relaxed fit you enjoy wearing. For a step-by-step fit check, see our guide to light-blocking silk eye masks.
Which Fits Your Sleep and Travel Routine?
Side sleeping: think about the pillow as well as the eyes
SB112’s recessed cups are useful when eye-area contact is the feature you most want to change. SB31 is worth considering if you already enjoy a broad wrap and prefer a simpler profile. For either mask, place the overlapping fastening away from the side resting on the pillow and smooth out folds in the band.
Try the fit in your normal sleeping position. A pillow can press a mask sideways or bring an edge closer to the face, so comfort while sitting upright tells only part of the story. Our side-sleeper eye mask guide compares the wraparound models with our narrower-band styles too.
Flights and hotels: bring a familiar silk touch
Both wraps can become a comforting part of your travel routine. Choose SB112 when you want recessed eye space as you recline; choose SB31 when broad silk coverage is your main preference. Test the fastening with your travel pillow before a long journey, then pack the mask clean and dry in a protected part of your hand luggage.
For a lighter-packing, compact shape rather than a wide wrap, our collection also includes SB30. See the long-flight silk eye mask guide to compare all four designs in a travel setting.
Daytime naps and bright mornings
A wide mask brings coverage around the eyes and temples when the room is brighter than you would like. Pair a comfortable fit with curtains or blinds, lower other distractions and enjoy the smooth silk touch as you wind down. Pick SB112 for the additional eye-cup space or SB31 for straightforward wraparound comfort.
If your current mask leaves pressure lines, start with the fit adjustments in our guide to sleep mask marks. That can help you distinguish a strap-position issue from a reason to try a different shape.
Which One Should You Buy?
- Choose SB112 if fabric touching your eyelids bothers you, you want to explore recessed eye cups, and you like the idea of a wide adjustable wrap.
- Choose SB31 if broad eye and temple coverage is your priority and you prefer a simpler wraparound design.
- Compare SB29 and SB30 as well if you would rather have a narrower headband or a more compact front panel.
The extra reason to choose SB112 is its sculpted interior—not a promise that a more expensive mask is automatically the best fit for everyone. Use the product photos, dimensions and demonstration videos to decide whether that feature answers what you want from your next mask.
Complete your bedside routine with a smooth mulberry silk pillowcase, or explore Silk Bonnet World’s silk bonnets for overnight hair coverage. Choose pieces you will enjoy using, one comfortable detail at a time.
Frequently Asked Questions
Is SB112 just a larger version of SB31?
No. They have similar overall lengths, but SB112’s defining feature is its recessed 3D eye cups. Its listed unfolded width is 12 cm, while SB31’s front height is up to 11.5 cm.
Do both masks have adjustable fastenings?
Yes. Both use overlapping hook-and-loop panels on a wide wraparound band. Adjust the overlap for a secure, relaxed fit.
Which should I choose if a flat mask touches my lashes?
Start by exploring SB112’s recessed design. It creates more eye-area space than a flat front. For extensions, also consider lash length and curl, follow your technician’s aftercare guidance and assess clearance in your normal sleeping position.
How do I wash a contoured silk mask?
Close the hook-and-loop panels and gently hand wash in cool water with silk-friendly detergent, following the care label. Press out moisture with a towel, reshape the eye cups and air dry flat in the shade. Our silk eye mask washing guide covers the routine in more detail.
Ready to find your favourite fit? Shop the SB112 3D silk sleep mask, explore the SB31 wraparound mask, or compare all mulberry silk eye masks before choosing your colour.