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Women's Ultrafine Merino Sleep Longsleeve

5.0
Rated 5.0 out of 5 stars
21 Reviews
£76
£76
100% Merino Wool, Jersey. 165 gsm.
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Women's Ultrafine Merino Sleep Longsleeve

5.0
Rated 5.0 out of 5 stars
21 Reviews
£76
£76
100% Merino Wool, Jersey. 165 gsm.

Wind down in the ultra-lightweight comfort of Merino wool. This super-soft, naturally thermoregulating sleep longsleeve is designed to enhance your rest, keeping you cool when needed and cozy throughout the night. Pair with our Ultrafine Merino Sleep Bottoms or Shorts for the ultimate sleep setup. 

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Wind down in the ultra-lightweight comfort of Merino wool. This super-soft, naturally thermoregulating sleep longsleeve is designed to enhance your rest, keeping you cool when needed and cozy throughout the night. Pair with our Ultrafine Merino Sleep Bottoms or Shorts for the ultimate sleep setup. 

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Fabric and Details
  • 100% Merino Wool, Jersey
  • 165 gsm
  • Soft touch
  • Fiber micron: Ultrafine 15.5
15 µm
15.5 µm
25 µm
Care instructions
  • Wash on cool temperature setting
  • Wash with like colors
  • Lay flat to dry in shade
  • Do not bleach
  • Do not tumble dry
  • Iron on low temperature
Merino Care 101
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Sleep Better in Merino Wool. 

  • Temperature-regulating properties mean you’re never too hot or cold.
  • Super-soft feel against your skin. 
  • Antibacterial, unlike cotton and synthetics.
  • Moisture-wicking, keeping you comfortable.
  • Folds up compactly, saving you essential packing space.
Sleep Better in Merino Wool. 
Nature’s miracle fabric

Nature’s miracle fabric

Every Merino wool fiber has a waxy coating called Lanolin, which helps wick moisture away from your body, and act as a safeguard against odor-causing bacteria. This is what allows our Merino to stay breathable and dry while smelling and feeling fresh, no matter what you put it through.

Softer than cotton

Softer than cotton

This wool isn’t like your typical itchy sweater. We only use superfine (15.5 micron) Merino wool, resulting in a luxuriously silky soft feel that’s lighter and more plush than your average Merino or cotton. And unlike most clothes, it'll also maintain its form over time and won’t get ruined after a wash.

Ultrafine Sleep Jersey

Ultrafine Sleep Jersey

Made from 15.5 micron ultrafine Merino wool, this sleep jersey is cloud-soft and temperature regulating—ideal for uninterrupted rest. Lightweight and breathable at 165gsm, it keeps you cool or warm as needed. Perfect for home or travel, it’s comfort you’ll look forward to every night.

“The perfect T-shirt can see you through almost any situation, and Unbound makes a strong bid for the title with their chic Merino designs.”

"It's the most popular T-shirt in our Merino guide and well-loved by travelers. It's very soft and lightweight, and it packs down to a tiny roll."

“These tees have a sophisticated European elegance to them, thanks to both the material and design. Just looking at them makes you feel chic.”

“Between the flattering fit and the classic style, it's a great option for travel.”

"I may hold off on washing this T-shirt for another few weeks. It miraculously looks and smells like it was just cleaned."

Travel Leisure
WIRED
Forbes
Lonely Planet
Fast Company

"This is the perfect base layer as it’s super lightweight and is anti-wrinkle and moisture-wicking. This can quickly become your new closet staple at home and on the road."

"I may hold off on washing this T-shirt for another few weeks. It miraculously looks and smells like it was just cleaned."

"Lightweight and breathable, this shirt has a perfectly soft feel. The thin material is moisture-wicking, making this great for layering or wearing on its own."

"Unbound Merino sits at the intersection of travel gear and luxe knitwear, offering wool garments in timeless styles. They use superfine premium Merino wool that’s Woolmark-certified."

"This shirt's wool fibers lock odor molecules within and only release them on washing — which means less washing and more wearing. That makes this the ultimate travel top."

Travel + Leisure
Fast Company
Conde Nast Traveller
Bustle
Refinery29

About our wool

  • Made in Green OEKO-TEX® certified which guarantees this item was manufactured in environmentally friendly, socially responsible facilities.
  • Bluesign certified for supply chain traceability, a service that helps companies to become more sustainable.
  • GOTS (Global Organic Textile Standard) certified, ensuring organic integrity and responsible manufacturing at every step.
  • Tested to ensure our clothing stands up to the rigors of travel and continual use.
  • Sustainably sourced from independent, cruelty-free wool farms.
OEKO-TEX
Bluesign
GOTS

What people are saying

5.0
Rated 5.0 out of 5 stars
Based on 21 reviews
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21 reviews
  • EA
    Elaine A.
    Verified Buyer
    I recommend this product
    What size did you buy? S
    Rated 5 out of 5 stars
    10/1/26
    So Soft!

    I wasn’t expecting these PJs to be so soft. Besides being a beautiful color, they are the softest, most comfortable pajamas I’ve put on in a while. I rarely even wear a set, preferring a top from one set and the bottoms from another when I find something I like at all. These will be great for travel since they are nearly weightless and will roll up to almost nothing. Highly recommend. I am 5’8”, 135 and bought a small. Fit is comfortably loose but doesn’t feel as if it will fall off.

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  • DR
    Donna R.
    Verified Buyer
    I recommend this product
    What size did you buy? XL
    Rated 5 out of 5 stars
    9/30/26
    Versatile top!

    This top length is great! I wear it with sleepwear and with jeans.

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  • CZ
    Carmen Z.
    Verified Buyer
    I recommend this product
    What size did you buy? L
    Rated 5 out of 5 stars
    9/29/26
    Soft, Light and Comfortable

    Just back from Italy. Wore this every night for two weeks over my sleeveless nightgown. It was always a little chilly in the room because of the A/C running. This kept me at a very comfortable temperature and did not cause any overheating, nor did it every smell. It was soft, light and very comfortable and packed down small.

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  • RB
    Robin B.
    Verified Buyer
    I recommend this product
    What size did you buy? L
    Rated 5 out of 5 stars
    9/29/26
    Soft and drapey

    Wearing this as a shirt not PJ. The fabric is so nice. A little itchy at the neckline, I don't usually do the higher neck wool. The cut is very nice, cropped but not overly so, lands at high hip for me. Sleeves a little too short. The wide cut falls so nicely it does not look boxy. Color too, is a dust color and very flattering. My expectations were high, and were met. I did size up as I'm tall and wanted that little bit of extra length.

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  • EM
    Ellie M.
    Verified Buyer
    I recommend this product
    What size did you buy? XL
    Rated 5 out of 5 stars
    9/27/26
    Very Cozy

    I’m very impressed. I got the long sleeve in Heather Earth color. I absolutely love them. They are comfortable, the wool is perfect and soft to touch. Love the color. I wish more items came in this color. I took a size larger in the top compared to the tee shirt size. Just love the set!

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