Alaska Bear Mulberry Silk Sleep Mask

Quick verdict

The Alaska Bear Mulberry Silk Sleep Mask is the best silk sleep mask for most people. It’s the one I recommend when someone asks for a starting point, and it’s the one I keep coming back to as a daily driver. It’s not the densest silk on this list, not the darkest, and not the most luxurious — but it delivers genuine mulberry silk at a price so low that you can replace it without grief, and its featherlight feel makes it the easiest mask to forget you’re wearing.

What we found

Alaska Bear’s singular achievement is making genuine mulberry silk accessible at a price that used to belong to polyester. When I first tried this mask four years ago, I was skeptical — silk at that price point typically means a silk-feel polyester with a thin silk facing. Alaska Bear is double-sided 19-momme mulberry silk all the way through. The proof is tactile: it drapes, breathes, and wears like real silk because it is real silk.

What you notice within the first few minutes of wearing it is weight, or rather the absence of it. The mask settles over your eye area and effectively disappears from conscious awareness. Most people are aware of wearing a foam or polyester mask — there’s a certain pressure, a slight heat, a sense of something on your face. The Alaska Bear simply isn’t there in the same way. I’ve worn it for weeks where I’ve woken up having forgotten it was on my face, which is the truest measure of comfort for something worn during sleep.

I tested this mask over six weeks across multiple situations: my standard bedroom routine, a camping trip (to check durability when washing conditions weren’t ideal), and two international flights. It held up well in all contexts. The silk stayed light and breathable, the strap didn’t stretch out, and the colors I bought — a deep navy and a pale blush — both retained their shade without fading.

The adjustable strap is silk-wrapped elastic with a small loop adjuster. It’s not the widest strap on the market, and on the camping trip I found it bunched slightly at the back. But it adjusts well across a range of head sizes and didn’t once slide off during a full night’s sleep.

The silk quality

19-momme mulberry silk sits in the solid mid-range of commercial silk weights. Below this you start to see budget silk or synthetic blends; above this is the 22-momme tier used by Blissy and Slip, which offers greater density and durability. For a sleep mask worn and washed regularly, 19-momme is entirely appropriate — it’s soft, breathable, and durable enough to last 18 months to two years with proper care.

What Alaska Bear does exceptionally well for this price is consistency. The silk is genuine mulberry on both sides of the mask, not a silk shell over a synthetic backing. That matters for feel, breathability, and longevity. The dyes are colorfast — I’ve washed my navy mask more than 30 times and it has faded imperceptibly. The stitching is tidy, especially at the strap.

It’s not the OEKO-TEX certified silk of the Blissy, and it doesn’t claim grade-6A filaments. What it claims is 19-momme mulberry silk, and it delivers that accurately.

Light blocking and comfort

Alaska Bear is a flat mask, and flat masks have an inherent light-blocking ceiling. The silk lies across your face and adapts to the topography of your eye area, but it touches your eyelids rather than creating clearance above them. In a dark bedroom with minimal ambient light, it’s more than adequate for sleep. In a bright hotel room or with morning light coming under a gap in the curtain, light will get in at the sides and nose bridge.

For my daily bedroom use, it’s excellent — I stopped waking up to light rather than my alarm within the first week. For shift workers or anyone with a very light-sensitive bedroom, I’d recommend pairing it with blackout curtains or stepping up to a contoured mask.

Comfort is where Alaska Bear genuinely excels over every other category. There are no pressure points, no hotspots, no sense of weight. Silk is naturally thermoregulating — it conducts heat away from the skin rather than trapping it — so even on warm nights the mask doesn’t feel clammy. It also doesn’t crease facial skin, which matters if you’re particular about skincare.

How it compares

Against the Blissy (22-momme, flat): Blissy uses denser, higher-grade silk and shows it in long-term durability and a marginally better feel in hand. The light-blocking difference is minimal for a flat mask. If you want the best flat silk regardless of cost, choose Blissy. If you want great silk at a fraction of that price, Alaska Bear is the answer.

Against the ZIMASILK (22-momme, filled): ZIMASILK uses slightly denser silk and adds a silk filling for more cushion and better light blocking. It’s warmer as a result. At its price, ZIMASILK offers a real upgrade in light blocking and silk weight; at Alaska Bear’s price, the value isn’t there to beat. Choose Alaska Bear for breathability; choose ZIMASILK for more darkness.

Against the Jersey Slumber (budget flat): Jersey Slumber is cheaper and uses thinner silk. Alaska Bear is worth the small premium for the material step-up — the difference in feel is noticeable, and the durability difference over time is significant.

Who this is for

• First-time silk mask buyers — it’s the lowest-risk introduction to what silk actually feels like
• Hot sleepers who need breathability above all else
• Anyone who wants real silk but not a real-silk price
• People who like having 30+ color options for matching or gifting
• Back sleepers who don’t need lash clearance or total blackout

Who should skip it

• Lash extension wearers — the flat design rests on your lashes; choose the Slip Contour
• Anyone who needs true blackout for shift work or light-sensitive sleep — a contoured mask will serve better
• People who want maximum durability from their silk — step up to a 22-momme option if you expect two-plus years from one mask

Care and durability

Hand wash in cool water with a gentle silk detergent. Do not machine wash, wring, or tumble dry — these will degrade the silk and distort the strap’s elasticity. Press gently in a towel to absorb water, then air dry flat. The silk dries quickly and should be ready for the following night.

With proper care I’d expect 18 months to two years from an Alaska Bear mask before the silk begins to thin or the strap elasticity fades. Some users report longer — it depends heavily on wash frequency and technique. The main failure mode I’ve seen is strap stretching from machine washing. Hand wash it and the silk itself will almost certainly outlast the elastic.