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Women's Ultrafine Merino Sleep Bottoms

4.8
Rated 4.8 out of 5 stars
145 Reviews
$138
$138
100% Merino Wool. 165gsm.
Heather Earth
Heather Earth
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Model is 5'8", has a 24" waist and is wearing size S

Women's Ultrafine Merino Sleep Bottoms

4.8
Rated 4.8 out of 5 stars
145 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 Heather Earth
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Only 4 payments of $35 with

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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Free easy exchanges
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 145 reviews
Slide 1 selected
Total 5 star reviews: 130 Total 4 star reviews: 11 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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145 reviews
  • LL
    Liza L.
    Verified Buyer
    I recommend this product
    What size did you buy? M
    Rated 5 out of 5 stars
    7/14/26
    Best Pajamas

    You will never want to sleep on something else again. These sleep bottoms and the matching top are the softest and most comfortable merino wool fabric out there. It's excellent for sleeping and you feel confident that the material touching your skin is all natural and not synthetic.

    How did you find the fit?Rated 0.0 on a scale of minus 2 to 2
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  • PS
    Patricia S.
    Verified Buyer
    I recommend this product
    What size did you buy? L
    Rated 5 out of 5 stars
    7/13/26
    Best sleep bottoms ever!!

    A friend recommended these sleep bottoms and they did not disappoint. They are not inexpensive, but I believe the quality is there and that they will last for years. So well worth the investment. Silky smooth fabric making for a great night's sleep.

    How did you find the fit?Rated 0.0 on a scale of minus 2 to 2
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  • KH
    Kim H.
    Verified Buyer
    I recommend this product
    What size did you buy? L
    Rated 5 out of 5 stars
    7/13/26
    Unbound PJ,s

    Gave these as a gift to my wife, she loves the color and style but especially the fabric that is amazing.

    I would like to have men’s polos made from the same/similar fabric.

    How did you find the fit?Rated 0.0 on a scale of minus 2 to 2
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  • SS
    Sheilah S.
    Verified Buyer
    I recommend this product
    What size did you buy? XL
    Rated 4 out of 5 stars
    7/12/26
    Sleep bottoms

    Very roomy and has pockets. Great colour.

    How did you find the fit?Rated 1.0 on a scale of minus 2 to 2
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  • T
    Tea
    I recommend this product
    Rated 5 out of 5 stars
    7/12/26
    5 Stars

    I purchased these pants in two colors, and this one is absolutely gorgeous. Paired with the matching top and the striped button-down shirt, it creates a beautiful, polished outfit. These pants have been a fantastic addition to my wardrobe. They’re versatile, comfortable, and easy to dress up for work or wear while traveling. I’m very happy with my purchase and expect to get a lot of use out of them. The quality and craftsmanship is fabulous. I will be a repeat customer.

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