The Only Blackout Curtains without Formlahyde

100% Blackout Guaranteed. Certified by UL Greenguard & OEKO-TEX.


Sleep Better ➤

Sleepout on Good Morning America

Blackout Fabric, without the toxins.

Most blackout curtains are made with toxic coatings that release harmful VOCs when sunlight hits them, contaminating the air in your home. We walked away from our jobs to create a safer alternative: blackout fabric that blocks 100% of light without a single nasty chemical. Designed in Austin Texas our curtains let you breathe easy and sleep better.

Darkness, in seconds

Made from Sleepout® 100% Blackout Fabric, works on any window.


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Keep Heat Out

Our blackout curtains block sunlight heat, keeping your room cool and your energy bills low, no AC needed.

Certified Safe

The first 100% blackout curtains that are safe to touch, certified free of formaldehyde and 15,000+ harmful chemicals.

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Blackout for Any Window

Our Portable Blackout Curtain fits any window (even behind blinds or existing curtains). Our other Curtains are designed to work with all curtain rods.

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What Made Sleepout® Fabric the #1 Recommended?

Sleepout® Blackout Fabric is guaranteed to provide 100% blackout and is certified non-toxic.

For over a century, blackout curtains have often been made with dangerous levels of formaldehyde to cut costs. Sleepout curtains are different. Made with our proprietary blackout fabric, they’re the only ones in the world that meet the highest safety standards—without compromising performance.

How do Your Curtains Control Tempature?

Sleepout® Blackout Fabric has a white backing that is HOA-approved and reflects sunlight back outside to stop bedrooms from overheating. You can save 30% or more on your energy bill by using Sleepout® Fabric on your windows.

Are Your Curtains Easy to Install?

Our Sleepout® Portable installs in less than 30 seconds on any window. Our Other Sleepout® Curtains work with all curtain rods. If you have any questions, please contact us and we will help with installations.

Customer Reviews

Based on 476 reviews
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Angela W. (United States)
Wish they were slightly bigger, easy to use

Hoping they help keep my home cooler but definitely a little smaller than I’d like. Easy enough to assemble.

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Anonymous (United States)
Pretty good!

The good: adhesive velcro attachments easy to set up. Velcro makes it super easy to attach and remove without having to make it an installation project. Super good making it dark, which is the point!

Only having one size is annoying. We have a bunch of different sized windows, including some small ones, so getting a huge single curtain for a small window seems like a waste. It’s also inconvenient for bay windows. I think making just 3 sizes would do wonders for versatility.

Also, the shipping was SLOOOOOWWWW. It took almost 2 weeks to arrive, during which time our baby wasn’t sleeping as well!!

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Linda (United States)
Absolutely fantastic!!

The Sleepout Blackout curtains are wonderful, ie non-toxic material, completely darkened my room, very well made, aesthetically beautiful, very easily and quickly installed, and machine washable, and very nice tote bag packaging. I am very happy with my purchase of the Sleepout Blackout Curtains. I highly recommend the Sleepout Blackout Curtains!!