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Women's Ultrafine Merino Sleep Bottoms

4.9
Rated 4.9 out of 5 stars
109 Reviews
$138
$138
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Model is 5'10.5", has a 25" waist and is wearing size S

Women's Ultrafine Merino Sleep Bottoms

4.9
Rated 4.9 out of 5 stars
109 Reviews
$138
$138

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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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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  • 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

4.9
Rated 4.9 out of 5 stars
Based on 109 reviews
Slide 1 selected
Total 5 star reviews: 99 Total 4 star reviews: 8 Total 3 star reviews: 0 Total 2 star reviews: 1 Total 1 star reviews: 1
How did you find the fit?Rated 0.4 on a scale of minus 2 to 2
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109 reviews
  • SR
    Susan R.
    Verified Buyer
    I recommend this product
    What size did you buy? M
    Rated 5 out of 5 stars
    3/16/26
    Sooooo comfortable

    These are the best pyjamas I own, I love sleeping in them because they are warm without being hot, but I am also happy to lounge around in them at home. They wash well and dry fast too, love them! I bought M/28 - 5'3", I fit petite medium usually, these were perfect.

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  • KA
    Kathy A.
    Verified Buyer
    I recommend this product
    What size did you buy? L
    Rated 5 out of 5 stars
    3/15/26
    Sleep pants

    I love these sleep pants. They are so comfortable. I bought the matching sleep top and have been sleeping in them all week. These have become my favorite PJs. My only issue is the pants are a bit long but it is not an issue for sleeping. I am 5’5” and bought 28” length which should have been fine. I would love to see these in a true cropped length for summer wear. I will probably buy another set once my size is available in another color

    How did you find the fit?Rated 1.0 on a scale of minus 2 to 2
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  • CW
    Caryn W.
    Verified Buyer
    I recommend this product
    What size did you buy? L
    Rated 5 out of 5 stars
    3/9/26
    Merino Wool Sleep Bottoms

    This sleepwear from unbound is amazing. I bought a set last summer to take on a three week trip but at the time you were out of most colors and sizes and the sleep bottoms that I got were so long I was walking on them. So recently I bought a set that is once I smaller andare 28 inch inseam and they are perfect. I love that these pajamas don’t get stinky, which is important when you’re traveling. I have other unbound Marino wool pieces as well and I love them all.

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  • TC
    Terry C.
    Verified Buyer
    I recommend this product
    What size did you buy? S
    Rated 5 out of 5 stars
    3/8/26
    The BEST sleepwear

    I absolutely LOVE this set. So soft and luxurious. The pants are a bit long (I’m 5’4”) and wish they came in a shorter style but I can make them work.

    How did you find the fit?Rated 0.0 on a scale of minus 2 to 2
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  • SL
    Sandra L.
    Verified Buyer
    I recommend this product
    What size did you buy? M
    Rated 5 out of 5 stars
    3/6/26
    Comfortable pants

    Great quality and very comfortable. They are good for sleeping, and great for travelling too. The material is soft, dries quickly.

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