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Women's Merino Sleep Tank

4.9
Rated 4.9 out of 5 stars
24 Reviews
£42
£52 £42
Save £10
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Model is 5'11", has a 33.5" bust and is wearing size S

Women's Merino Sleep Tank

4.9
Rated 4.9 out of 5 stars
24 Reviews
£42
£52 £42
Save £10

Settle into a satisfying sleep in the airy comfort of Merino wool. This super-soft, temperature-regulating V-neck top keeps you cool and comfortable when it matters most. Pair with our Sleep Short for the ultimate sleep setup.

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Color Black All items marked Final Sale at the time of purchase are not eligible for return, refund, or exchange. Only 5 left!
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Settle into a satisfying sleep in the airy comfort of Merino wool. This super-soft, temperature-regulating V-neck top keeps you cool and comfortable when it matters most. Pair with our Sleep Short for the ultimate sleep setup.

Free shipping on UK orders over £135
Free easy exchanges
Why our customers
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  • Odor resistant Odor resistant
  • Wicks moisture Wicks moisture
  • Light and breathable Light and breathable
  • Perfect for packing Perfect for packing
Fabric and Details
  • 63.5% Merino Wool, 27.5% Tencel, 9% Nylon
  • 200gsm
  • Soft touch
  • Fiber micron: Superfine 17.5
15 µm
17.5 µm
25 µm
Care instructions
  • Machine wash in warm gentle cycle
  • Wash with like colors
  • Do not bleach
  • Do not tumble dry
  • Lay flat to dry in shade
  • 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.
  • Won’t smell after weeks of wear, unlike cotton or synthetics.
  • Dries really fast, keeping you comfortable.
  • Folds up compactly, saving you essential packing space.
Sleep Better In Merino Wool.
Nature's Miracle Fabric

Nature's Miracle Fabric

Merino wool fibers allow it to wick moisture away from your skin, which ensures comfort and moisture management. Merino wool’s complex structure locks odor molecules within the fiber and only releases them on washing.

Softer than cotton

Softer than cotton

This wool isn’t like your typical itchy sweater. We only use superfine (17.5 micron) Merino wool, resulting in a luxuriously silky soft shirt that’s lighter and much softer than the average Merino or cotton shirt. It’ll also maintain its form over time and not get ruined after a wash, like most clothes these days.

Easy care

Easy care

You won’t have to wash this shirt much at all. However, when it comes time for a refresh, simply add it to your load at the normal or cool temperature setting and then lay flat to dry.

“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

  • Woolmark® certified Merino wool means you can expect the highest standards related to fiber content, performance, color fastness, and dimensional stability.
  • 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.
  • RWS (Responsible Wool Standard) certified, adheres to the welfare of the sheep and their land.
Woolmark
OEKO-TEX
Bluesign
GOTS
R.W.S

What people are saying

4.9
Rated 4.9 out of 5 stars
Based on 24 reviews
Slide 1 selected
Total 5 star reviews: 22 Total 4 star reviews: 2 Total 3 star reviews: 0 Total 2 star reviews: 0 Total 1 star reviews: 0
How did you find the fit?Rated 0.2 on a scale of minus 2 to 2
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24 reviews
  • KM
    Katerina M.
    Verified Buyer
    I recommend this product
    What size did you buy? S
    Rated 5 out of 5 stars
    5/18/26
    the best of the best for normal wear!!!

    I love this top and I wish different colours, I want natural colours and light colours. I wear this top as a normal everyday top, I love how it has loose relaxed fit, the shape is amazing, there is nothing out there similar to it and I searched a lot. I am extremely sad I went for the black and not the brown which sold out :(

    How did you find the fit?Rated 0.0 on a scale of minus 2 to 2
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  • MJ
    Maureen J.
    Verified Buyer
    I recommend this product
    What size did you buy? M
    Rated 5 out of 5 stars
    5/13/26
    Very Comfortable.

    I wasn’t sure what size to order as an Unbound merino T-shirt I have, I had to upsize to a large because of how close fit it is . I took the chance that this sleep tank looked to have a looser fit. I went with the medium and it’s perfect. It has a bit of an A-line to it so it doesn’t cling around the waist. The V neckline is perfect. Not too low. It doesn’t have adjustable straps but turns out I don’t need them. For reference I’m 5’2” 132 lbs 36B

    How did you find the fit?Rated 0.0 on a scale of minus 2 to 2
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  • JB
    Janelle B.
    Verified Buyer
    I recommend this product
    What size did you buy? XL
    Rated 5 out of 5 stars
    5/12/26
    Dreamy sleep tank!

    I took the plunge on a pricier sleep set and my only regret was not doing sooner. The tank is comfy with a loose fit. I found it fits slightly larger (usually a L/XL in tops, purchased an XL which fits loose and comfy for sleep ). I’m a hot sleeper and these don’t get too toasty! They’re great for travel because they can be worn multiple nights in a row without need for wash, but when you do wash them they are quick to dry.

    How did you find the fit?Rated 1.0 on a scale of minus 2 to 2
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  • PT
    Puiyee T.
    Verified Buyer
    I recommend this product
    What size did you buy? L
    Rated 5 out of 5 stars
    5/11/26
    Comfortable and soft

    The sleep tank is comfortable and soft

    How did you find the fit?Rated 1.0 on a scale of minus 2 to 2
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  • MR
    Martha R.
    Verified Buyer
    I recommend this product
    What size did you buy? M
    Rated 5 out of 5 stars
    5/4/26
    This sleep tank doubles as a camisole!

    I love the softness and fit of the sleep tank. I've been wearing it everyday for 4 days here in Boston. It's much cooler here than I expected , so I'm so glad I brought it on this trip. It keeps me warm without being bulky

    How did you find the fit?Rated 0.0 on a scale of minus 2 to 2
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