The Leader In Fabric Safety
Sleepout® Fabric is the only blackout fabric in the world to meet both GREENGUARD® Gold and OEKO-TEX® STANDARD 100. That means our curtains are free of over 15,000 Chemicals.
Sleepout® Curtain Certifications
Sleepout® Curtains are tested against the world’s strictest textile safety standards.
GREENGUARD® Gold
Sleepout® Curtains are certified to contribute to cleaner indoor air for you and your family. Screened for more than 15,000 VOCs known to pollute indoor air. We are the only blackout curtains in history to achieve this certification.
OEKO-TEX® STANDARD 100
From yarn to finished product, every thread of Sleepout® Fabric has been tested against a list of over 1,000 harmful substances that are used in other textiles.
Free of Azo Dyes
3rd-party tested to confirm zero Azo Dyes or Colorants are used in our fabric. Complies with EU azo dye restrictions REACH Regulation (EC) No. 1907/2006 Annex XVII Item 43.
EN ISO 14362 & EN ISO 17234
Tested by Intertek HK | 2026
Best for Kids™
Sleepout® Curtains are the first blackout curtains certified safe for young children by the Window Covering Safety Council. Meaning there are no hazardous operating pieces.
WCMA A100
Tested in Chicago, IL, USA | 2026
The Only GREENGUARD® Gold Blackout Curtains
Designed originally to protect children in settings like nurseries, the GREENGUARD® Gold certification affirms that our blackout fabric is safe from off-gassing VOCs at the highest possible standard.
Each curtain produced by Sleepout has passed a 7-day off-gassing test, and our fabric is continuously retested to uphold the certification annually.
To verify our certification and the certification of any other company, please visit the SPOT database.
Class 1 OEKO-TEX® STANDARD 100
Sleepout® Blackout Curtains hold a product-level certification, ensuring every part of the curtain you receive meets the highest standards. Certified by OEKO-TEX, our fabric is rated safe for direct skin contact.
To verify our certification and the certification of any other company, please use the OEKO-TEX® Label Check
What Makes Sleepout® Best in Blackout?
100% Light Blocking
Sleepout® Curtains are certified True 100% blackout fabric. That means zero light comes through our fabric, for naturally better sleep.
AATCC 203-2021
Tested by Intertek HK | 2026
Thermal Insulated
Sleepout® Curtains is certified to help keep rooms warmer in winter and cooler in summer, by reducing drafts and temperature fluctuation with insulation to support better energy efficiency.
ASTM C518
Tested in Newark, CA, USA | 2026
Complete UV Protection
Sleepout® Curtains block 100% of UV light, to protect your home and indoor space from heat. In addition, Sleepout® Fabric is highly resistant to fading in harsh direct sunlight.
ASTM G154-23
Tested in Chicago, IL, USA | 2026
Up to -25 dB Noise Reduction
Sleepout® Curtains offer a certified reduction in noise by up to -25 dB, Especially high pitch noises like voices, birds, dogs or alarms.
ASTM E-90
Tested in Newark, CA, USA | 2026
