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Women's Ultrafine Merino Sleep Bottoms

4.8
Rated 4.8 out of 5 stars
126 Reviews
$138
$138
100% Merino Wool. 165gsm.
Almond
Almond
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Almond
Almond
Almond
Almond
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Model Info +

Model is 5'10", has a 24" waist and is wearing size S

Women's Ultrafine Merino Sleep Bottoms

4.8
Rated 4.8 out of 5 stars
126 Reviews
$138
$138
100% Merino Wool. 165gsm.

Experience better sleep with the comfort of Merino wool. These ultra-soft, temperature-regulating pajama bottoms are designed to enhance your rest, keeping you cool when needed and cozy throughout the night. Pair with our Ultrafine Sleep Top for the ultimate sleep setup.

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Color Almond Only 15 left!
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Experience better sleep with the comfort of Merino wool. These ultra-soft, temperature-regulating pajama bottoms are designed to enhance your rest, keeping you cool when needed and cozy throughout the night. Pair with our Ultrafine Sleep Top for the ultimate sleep setup.

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Why our customers
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  • Odor resistant Odor resistant
  • Temperature regulating Temperature regulating
  • Wicks moisture Wicks moisture
  • Perfect for packing Perfect for packing
Fabric and Details
  • 100% Merino Wool
  • 165gsm
  • Fiber micron: Ultrafine 15.5
15 µm
15.5 µm
25 µm
Care instructions
  • Machine wash in cold gentle cycle
  • Wash with like colors inside out
  • Do not bleach 
  • Do not tumble dry 
  • Iron in low temperature 
  • Lay flat to dry in shade
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 (15.5 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 pair of pants much at all. However, when it comes time for a refresh, simply add it to your load at the cold 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

  • RWS (Responsible Wool Standard) certified, adheres to the welfare of the sheep and their land.
R.W.S

What people are saying

4.8
Rated 4.8 out of 5 stars
Based on 126 reviews
Slide 1 selected
Total 5 star reviews: 112 Total 4 star reviews: 10 Total 3 star reviews: 1 Total 2 star reviews: 1 Total 1 star reviews: 2
How did you find the fit?Rated 0.4 on a scale of minus 2 to 2
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126 reviews
  • TG
    Tina G.
    Verified Buyer
    I recommend this product
    What size did you buy? L
    Rated 5 out of 5 stars
    5/9/26
    Sleep bottoms a dream!

    So comfy I want to wear them all the time and don’t want to take them off!

    How did you find the fit?Rated 1.0 on a scale of minus 2 to 2
    Was this helpful?
  • LP
    L P.
    Verified Buyer
    I recommend this product
    What size did you buy? S
    Rated 5 out of 5 stars
    5/7/26
    Loving these

    Please make these in a little heavier fabric so they can be worn as pants out of the house.

    How did you find the fit?Rated 0.0 on a scale of minus 2 to 2
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  • AJ
    Ann J.
    Verified Buyer
    I recommend this product
    What size did you buy? S
    Rated 5 out of 5 stars
    5/7/26
    Very comfy

    Really comfy lightweight sleep bottoms. I don't really see the need for sleep pants to have pockets, so the extra fabric for the pockets just makes them unnecessarily bulky, in my opinion. But otherwise they are great.

    How did you find the fit?Rated 0.0 on a scale of minus 2 to 2
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  • D
    Debra
    I recommend this product
    Rated 5 out of 5 stars
    5/4/26
    5 Stars

    So comfy

    Was this helpful?
  • KC
    Kimberley C.
    Verified Buyer
    I recommend this product
    What size did you buy? L
    Rated 5 out of 5 stars
    4/29/26
    Perfect!

    I needed PJs for a 2 week Europe trip coming up and these bottoms are perfect! Just what I love wearing but in merino. So excited to just pack 1 PJ set for 2 weeks because it’ll dry quickly if needs washing. For sizing, go by what they say your US size is. My waist/hip measurement was up a size on their chart and when I got my first delivery they were too big. Ordered a size down (my normal U.S. size) and those were perfect. I’m 5’4” and weigh 175#. Size large worked for me.

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