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Cosy London

Breathable TENCEL Sleep Mask for Side Sleepers Unisex – Black

Regular price
£44.00
Regular price
Sale price
£44.00
Shipping calculated at checkout.
EU customers: shop via NOTHS

EU orders are fulfilled via Not On The High Street and follow their delivery and returns policies.

Cosy London TENCEL™ Sleep Mask - Black
Soft, lightweight and breathable. 

Black is our most versatile colour, often chosen for travel and everyday use. It pairs easily with any routine and remains a popular choice for anyone looking for a simple, understated sleep mask that blends comfort with practicality.

Why you'll love it:

  • Comfortable in all sleep positions

  • Gentle on skin and hair

  • Breathable, natural fibers

  • Perfect for sleep, meditation and travel

  • Fully adjustable, pressure free fit

Fall asleep faster and stay comfortable all night.

We choose premium, responsibly sourced materials and local manufacturing so our sleep masks are designed for longevity. While many sleep mask wearers replace theirs every six months, ours are made to last up to two years and beyond.

Fewer replacements. Better sleep. Kinder to the planet.

 

Breathable TENCEL Sleep Mask for Side Sleepers Unisex – Black
Cosy London sleep masks in Black and Dune —
Cosy London sleep masks in Black and Dune —
Cosy London sleep masks in Black and Dune —

Measurements

Length: 66 cm
Height (longest point): 11.5 cm
Height (above nose): 9 cm

Materials

Outer fabric: Pure TENCEL™ Lyocell

Padding: Pure cotton

Velcro fastening

Shipping

Processing Times

We aim to pack and ship all orders within 2–3 business days (Monday to Friday). Orders placed on weekends or public holidays will be processed the next working day.

If we’re experiencing a high volume of orders, there may be a short delay, but we’ll always do our best to keep you informed.

UK Shipping

We currently ship directly to addresses within the UK via cosylondon.co.uk.

Free Standard Shipping is available on all UK orders and is sent via Royal Mail Tracked.

Express Shipping (1–2 business days) is available at checkout for £4.95.

Prefer to collect? Drop us an email at amanda@cosylondon.co.uk to arrange a pickup near Victoria Station.

EU Orders

If you’re based in the EU, you can shop Cosy London via our Not On The High Street store:

https://www.notonthehighstreet.com/partners/cosylondon/products

Please note that EU purchases are fulfilled through Not On The High Street and are subject to their own delivery, returns and customer service policies, which may differ from those listed on this website. (Not on the High Street)

Order Confirmation & Tracking

Once your parcel is on its way, you’ll receive a shipping confirmation email with your Royal Mail tracking link. Tracking usually activates within 24 hours.

You can also track your order here 

royalmail.com/track-your-item

🌱 Packaging & Sustainability

Your order will arrive in plastic-free, recycled packaging, carefully chosen to be gentle on the planet. We hope you’ll reuse or recycle it too.

Notes on Delivery

We do our best to always ship promptly, but please allow a few days for Royal Mail to deliver — especially during peak seasons.

While we can’t control postal delays, we’ll always help resolve any issues if something goes missing.

Safety and care

  • Use only over the eyes
  • Keep nose and mouth unobstructed
  • Adjust strap for a comfortable fit — loosen if pressure occurs
  • Avoid use with active eye infection or after recent eye surgery
  • Discontinue use if irritation occurs.
  • Wash gently and allow to dry fully before wearing again
  • Store in a dry place away from heat sources
  • Not recommended for children.

Testimonials

“Such a revelation! Light and comfy, yet it stays perfectly in place through the night. I’ve even used it during meditation — it’s pleasantly soothing.”

Irene

“Best gift to yourself! This mask has become part of my nightly routine. It stays on all night, feels amazing, and even helps during migraines when I’m sensitive to light. Total game changer.”

Sarah

“This mask set a new standard. It feels like air but works so well — slim, light, and thoughtfully designed. Every detail adds to a dreamy sleep experience.”

Marissa

“I travel a lot for work, and this mask is the first one that’s truly comfortable. It’s soft, light-blocking, and doesn’t leave marks like airline masks. I also love the mission behind the brand — would definitely recommend.”

Nick

  • Design & Materials

    Made from TENCEL™ Lyocell with a fine layer of 100% cotton padding, the mask is light, breathable and cool against the skin. It supports comfort through the night without overheating or bulk.

  • Fit & Function

    A smooth, flat shape gently covers the eyes and ears to reduce light and distraction without pressure. Comfortable in all sleep positions, including side sleeping, with a secure, adjustable fit.

  • Craft & Production

    Produced in small batches in London by skilled makers. Local production allows for consistent quality, careful construction and a more responsible approach to manufacturing.

  • Gentle on Skin, Kind to the Planet

    Crafted from eco-conscious materials chosen for comfort, durability and care

  • Made with Care in the UK

    Every item is handcrafted with attention to detail and ethically produced.

  • Satisfaction Guaranteed

    If something's not right, we'll make it right. No stress, no fuss.