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Sleepout Inc. is an online retailer specialising in blackout curtains and blackout accessories, operating under the brand name Sleepout. The company positions itself on the basis of verified light-blocking performance and independently certified textile safety.

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At a glance

About Sleepout Inc.

Main category
Blackout curtains and accessories
Prices from
£142.00 per curtain
Certifications
GREENGUARD Gold, OEKO-TEX Standard 100, WCMA A100
Light blocking
100% blackout, certified by Intertek
UV protection
Complete UV blocking
Thermal insulation
Certified thermal insulation, ASTM C518
Customer base
100,000+ customers
Returns
Returns and exchanges available
Sleepout targets consumers who prioritise sleep quality, including parents of young children, night shift workers, and anyone dealing with unwanted light in the bedroom or living room. The brand operates in the premium segment, with custom curtains starting from £142 per panel, and differentiates itself through third-party certifications rather than marketing claims alone. Sleepout is notable for being the only blackout curtain brand to hold GREENGUARD Gold certification, which screens for over 15,000 volatile organic compounds, alongside OEKO-TEX Standard 100 and a child safety certification from the Window Covering Safety Council. The product range includes portable blackout solutions, fixed curtains, hardware, and custom drapery, catering to both renters and homeowners.
September 2026

Active promotions

Ready to use with your order at Sleepout Inc..

Seasonal discount on selected blackout curtain collections, applied automatically at checkout during promotional periods.
To the shop
Free shipping on orders above a minimum order value, available for customers in supported regions.
To the shop
Recent

Sleepout Inc. in the news

Recent updates and background about Sleepout Inc., summarised in our own words.

Yahoo Finance

Thousands gather at sports venues to support homeless youth

In November, thousands of participants plan to spend a night outdoors at well-known sports venues. The event is organized to raise awareness and support for young people experiencing homelessness.

The New York Times

Overview of top-rated blackout curtains for light blocking

The New York Times published a roundup of blackout curtains that effectively block out light. The selection covers a range of options evaluated on their performance and quality.

Observer-Reporter

Volunteers sleep outside in Washington to highlight homelessness

A group of volunteers spent a night outdoors in Washington as part of an effort to draw attention to homelessness in the area. The initiative aimed to build public awareness around the issue through direct experience.

Summaries by Image Review based on publicly available sources and our own editing. External links may contain affiliate links.

Frequently asked questions

What others ask about Sleepout Inc.

Answers to the most common questions, based on search behaviour and our own research.

Is Sleepout a trustworthy webshop?

Sleepout holds multiple independently verified certifications, including GREENGUARD Gold and OEKO-TEX Standard 100, both of which can be verified through the respective certification bodies. The brand reports a customer base of over 100,000 buyers, and product testing is carried out by accredited third parties such as Intertek.

Do Sleepout curtains really block 100% of the light?

According to the brand, the fabric is tested to the AATCC 203-2021 standard by Intertek and certified as true 100% blackout, meaning no light passes through the fabric itself. Sleepout provides a comparison with standard blackout fabrics using a 10,000-lux light source to support this claim.

Are Sleepout curtains safe for children?

Sleepout curtains carry the WCMA A100 certification from the Window Covering Safety Council, which designates them as safe for young children due to the absence of hazardous operating components. The fabric is also GREENGUARD Gold certified, screening for over 15,000 VOCs.

Can I return my Sleepout curtains if they do not meet my expectations?

Sleepout offers a returns and exchanges service, as listed on their website. Customers are advised to consult the returns policy page directly for specific conditions and timeframes.

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