The Best Blackout Silk Sleep Masks

Momme weight is the one silk spec that actually predicts light blocking, and this mask has the most of it. Momme measures fabric density. Bedding-grade mulberry silk runs roughly 19 to 25 momme, and higher numbers mean thicker, more opaque, more durable cloth. Fishers Finery lists 25 momme on both sides of the mask — the company points out that's 13% more silk than the 22 momme brands. You can feel the difference as weight in your hand.

The 3D contour is the other half of the story. A polyurethane foam insert domes the fabric outward so nothing presses on your eyelids or lashes. If you've ever woken up with a mask mashed against one eye, you'll notice this immediately. It's also the reason the company markets it for lash extensions — there's genuine clearance in front of your eyes rather than fabric lying flat against them.

You get an adjustable strap, which is rarer in this category than it should be. Two of the picks below use fixed elastic, and fit is everything with sleep masks. Here the elastic is wide, covered in the same silk, and adjusts — so you can set it tight enough to seal at the nose without clamping your skull. Owners who've worked through several masks tend to call out the band specifically.

The certifications are worth a line. The silk carries both Oeko-Tex and GOTS, meaning it's organic and screened for harmful substances. If you have reactive skin or you're pressing a mask against your face for eight hours a night, that's a reasonable thing to want. The undyed natural colorway exists for the same reason.

Flaws but not dealbreakers

Light leaks are the real complaint, and they're common enough that we won't wave them off. Several owners report seeing light with this mask on, and at least one found that switching from a lighter color to black fixed it — thinner, lighter-dyed silk is simply less opaque. If you need full blackout, buy the darkest color offered.

The contoured shape doesn't suit every face. Some owners find the foam puts pressure right on the eyes rather than around them, which is the opposite of the intent — it depends on your eye socket depth. A few also report the elastic stretching out faster than they'd like. Keep the return window in mind.

Care is hand-wash or dry clean only, in cold water with a delicate detergent, laid flat to dry. If you want to throw a mask in with the sheets, look at the Lunya or the Brooklinen instead.

Most budget masks cut corners on the fabric. This one doesn't — it's Grade 5A organic mulberry silk, not polyester satin with a silk-sounding name. The grade is a notch below the 6A that Blissy and Fishers Finery advertise, and Alaska Bear doesn't publish a momme number, so you're trusting less information here. But the material itself is the real thing, and it's smooth against your skin in the way silk should be.

The strap is the best-designed one in this guide. It expands from 15.8 to 27.6 inches — a wider range than anything else here — with a large loop that won't snag your hair and a buckle positioned at the back of your head rather than the side. If you sleep on your side, that placement matters: a side-mounted adjuster becomes a lump against your pillow by 3 a.m.

The nose cutout is cut higher than most, which is where this mask earns its keep. Light under the bridge of the nose is the single most common blackout failure, and raising the cutout lets the silk conform to your face there without pushing down on your nose. Alaska Bear claims 100% coverage from the design. Owner feedback on this listing is limited but positive.

If you use eye cream, there's a side benefit. Silk fibers absorb less than cotton or poly satin, so your nighttime skincare mostly stays on your face instead of soaking into the mask. That's a small thing, but it's the sort of small thing that adds up over a year of nightly use.

Flaws but not dealbreakers

The spec sheet is thin. There's no momme weight listed, the silk is Grade 5A rather than 6A, and there's no mention of a contoured shape or padded interior — so the fabric likely sits flatter against your eyelids than the Fishers Finery does. If lash clearance or zero eyelid pressure is your priority, this isn't the mask.

This particular listing is a patterned colorway, and patterned silk is usually lighter and slightly less opaque than solid black. For maximum blackout, a solid dark color is the safer choice. It also has far fewer owner reports than the big sellers here, so there's less collective evidence about how it holds up over time.

If your face fits the one-size strap, this is the most comfortable mask here. Blissy pairs 22 momme 6A silk with a padded inner layer and a contoured shell, so the mask rests on your face rather than clamping onto it. The elastic is silk-covered with no hardware anywhere — no buckle, no plastic slider, nothing to press into your head when you roll onto your side.

The certification is more meaningful than most marketing badges. Oeko-Tex Standard 100 means the fabric was screened for harmful chemicals and dyes, which matters when you're pressing cloth against the thinnest skin on your body all night. Combined with silk's natural tendency not to wick moisture out of your skin, it's a sensible pick for sensitive or easily irritated faces.

Of everything in this lineup, this mask has the deepest pool of owner feedback by a wide margin — thousands of reports rather than dozens. That's worth something. Broad agreement across that many buyers is better evidence than a handful of enthusiastic reviews, and the consensus here is genuinely favorable on softness and on light blocking.

Blissy is candid in its own listing about the limits, which we appreciate. The copy says outright that fit and light-blocking performance vary with head size and facial structure, and that some people will get slight light entry depending on positioning. That's an honest description of every mask in this category.

Flaws but not dealbreakers

The strap doesn't adjust. It's sized for roughly 20 to 24 inches of head circumference, and if you fall outside that, there's no fix — the tension is what it is. Owners who want a snugger or looser fit have no recourse, and some find it too tight to wear at all. That's the main reason this isn't our top pick.

Because the mask drapes rather than sealing, light can slip in at the nose or cheekbone depending on your face. Blissy says so itself. If total darkness is non-negotiable, the adjustable options give you more ways to chase a seal.

Two sizes is the feature to pay for here. Fit determines whether a mask actually blacks out, and almost every competitor sells one size and hopes. Lunya offers small for 23 to 26 inches and large for 24 to 27, so measure your head before you order. That one step eliminates the most common reason masks get returned.

You can machine wash it. Hand or machine, cold water, lay flat to dry — and that's a real convenience if you wear a mask nightly with skincare on your face. Hand-washing does extend silk's lifespan, so the careful route is still better for the mask. But having the option means you'll actually keep it clean instead of letting it go gray.

The padded construction is aimed squarely at side sleepers. Mulberry silk over a polyester fill gives the mask some body, and the wide elasticized band spreads tension instead of concentrating it in a thin line. Lunya says the shape stays put through the night in either position. The company also notes that darker colors block more light — true of any silk mask, and a useful tip.

Silk is thermoregulating, which sounds like marketing until you've slept in a hot room with a foam mask on your face. The fabric runs cool to the touch and breathes, so your eye sockets don't end up sweating. If your bedroom is warm in summer, that's the difference between wearing a mask and kicking it off at 2 a.m.

Flaws but not dealbreakers

It's the priciest option in this guide, and the silk is washable mulberry rather than a published momme weight — Lunya doesn't give a number, so you can't compare its density against the 22 and 25 momme masks here. The fill is polyester, not silk.

Owner reports are limited, with fewer than a hundred on file, and the distribution is more mixed than Blissy's. The two-size system also means you need to measure correctly; order the wrong one and you're back to a fit problem, just a more expensive one.