The top that works as pyjamas, base layer, and everyday wear - without compromising on any of them.
Knit from 70% GOTS certified organic merino wool and 30% silk, this long-sleeve rib crew is soft enough for sensitive skin, warm enough for cold nights, and breathable enough for active days. Paired with the Merinosilk Leggings it's one of the most popular natural pyjama sets for children. Worn under a jacket or on its own, it does the same job.
The merino silk blend regulates body temperature in both directions - warming in cold air and releasing heat when your child is moving. It's naturally flame resistant, which matters when children are near heaters or open fires. The rib knit stretches with movement and growth, springs back into shape, and holds its colour wash after wash. Flatlock seams sit flat against the skin with no pressure points under tight layers.
Features
70% organic merino / 30% silk - temperature regulating day and night
Naturally flame resistant - safer near heaters and open fires
Rib knit for stretch, shape retention, and growth room
Flatlock seams - no bulk or pressure points under layers
Merino wool is naturally flame resistant - it has a higher ignition temperature than most synthetic fibres and doesn't melt onto skin when it does catch. Silk reinforces this property. Neither fibre requires chemical flame retardant treatments, making merino silk a safer choice for children's sleepwear than synthetic alternatives that achieve flame resistance through chemical finishing. OEKO-TEX® certification confirms the fabric is free from harmful chemicals.
What is the difference between merino silk and synthetic base layers for kids?
Synthetic base layers (polyester, nylon) wick moisture but don't regulate temperature - they move sweat away but can leave a child feeling cold and clammy. Merino silk regulates temperature actively, absorbs moisture vapour before it becomes sweat, and resists odour without chemical treatments. It's also biodegradable at end of life, unlike synthetic fibres.
Love these. Great for layering, flexible sizing, and Dill is just the best color!
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Joyce
Perfect!
Ever since these arrived, my daughter won't stop wearing them. I got her two sets and she wears them to bed and as an under layer for outdoor school. It took longer than estimated for our pre order to arrive, but they were worth the wait. They dry really fast, and are easy to wash. Also, customer service was really helpful when I had trouble getting the website to allow me to order the correct size.
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Cal
Love Them
My kids love the Nui Merino Silk Crew and matching Leggings. They keep them warm on winter nights as pajamas, cozy during the day for clothes, and they can be worn many times before washing. I ordered these during the pre-order in August and the date was pushed back many times with them finally arriving in December just before Christmas. I will continue ordering from Nui but I was a bit disappointed with my pre-order experience.
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Sophia vernes
Great!
Happy with the quality, we’d definitely buy more soon.
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JJ oberoi
Great for PJs and all day!
Fall has barely started but nights are already quite cooler now so my 2 yr old has been wearing these to bed and i gotta say we are loving them. comfy cozy.. keeps her body temp regulated as it should. bought in 2 colors! will certainly come back for more.
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Adrienne Harper
Layer them up!
Love it! Thank you! I am so happy knowing I can layer my daughter in these wonderful clothes! I send her off to school knowing she will be warm! Beautiful too!
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Shelby Stofle
Cute
Breathable and cute. Good fit. Material is a bit thin so I work it will get snagged. Color is pretty
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Jessica Aron
Literally THE best!
We have a very sweaty 2 year old who runs hot and used to leave puddles in bed of sweat. We went down quite a journey of finding pajamas that work. We got these and the very first night he slept through the night, and the bed was 100 dry. They don’t feel cool to the touch, but they also aren’t warm. They are like sleeping in a cloud. I was so impressed I got a pair for myself and live for wearing them!
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jennifer mcmillan
LOVE this material
Thank you so much Nui for bringing back the ribbed Merino Silk line!! It is the BEST for pajamas and also for our mild winter, long spring/summer season in NC. The dusk color is gorgeous, we also have the rust and dill and love love it all. I do wish you would bring back the ribbed shorts too, they are the best summer pjs.
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NATALIE PAVELCHAK
Love the material
I absolutely love all the products I got from Nue Organics so fa mr and this top for my 2.5 year old just perfect. Super soft and beautiful color.
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Leah Carpenter
Love this top
We have the matching set and it’s all my son wants to wear. Wonderful as baselayers and so light that they aren’t cumbersome to active movement. The Dill color is absolutely gorgeous. I’m obsessed.
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PTY 930459 JOONAS KIVISTO
It’s okay. Formed fuzz balls after wash
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Victoria Wheatley
Merino and Silk
We love our Nui Organics merino and silk clothes. I opted to splurge a bit to get my one year old son some comfy, warm underthings and I’m so glad I did. December had record lows where we live so having an undershirt tank, long sleeve shirt, and leggings to layer under his clothes was game changing! He has been toasty warm and comfortable. Also, hand washing has been a breeze since these fabrics are moisture wicking and tightly knit. Thank you Nui!
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Ruby Rose
They keep getting better
I’ve bought multiple sets of merino silk over the years and the quality just seems to keep getting better. Love this latest set so much, and denim is such a beautiful color!
Super durable, comfortable, and great for all seasons.
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Katherine Priggie
Instant Favorite
My 3 year old would wear this 24/7 if allowed. I'm about to buy another set to make it easier for her to wear it non stop. It's super soft and comfortable and incredibly high quality. Highly recommend!
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Jessica Gorrill
So comfy!
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Jessica Gorrill
Love them!!
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Rebecca Kent
Gorgeous as always!
We love everything we've gotten from Nui! My daughter got these merino silk pajamas for Christmas and I can tell they will be a treasure all year. Thank you!
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Brooke M.
Lovely!
Purchased this, along with matching bottoms for my daughter for Christmas. Very warm and soft, she absolutely loves them!
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Anastasia
Ribbing makes this one really versatile.
I needed matching shirts for family photos - and this one was sold out in the size I needed for my toddler, so I wound up buying the 6YO size, and hoping for the best. Because of the ribbing, it wound up being perfect - my 2 year old wore it in photos as a long-sleeved, knee-length dress (with slightly scrunched sleeves and a ribbon belt), and I'm loving it for sledding and outdoor play (because the extra length keeps her back warm in the snow). It's going to be in her wardrobe for years. The grey is neutral and soft and goes beautifully with both indigo jeans and all kinds of jewel tones. I'm glad I bought this in a set with the pants - the leggings are too long right now, but she loves them to sleep in (because she can cover her feet), and next winter they will go under all manner of outdoor gear.
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Mary B.
Favorite undershirt!
My very picky 7 year old loves this shirt- it's soft and stretchy but holds it's shape. He sleeps in it, wears it under his tshirts as an extra layer- I wish we had 5 of them!
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Canyondweller
Might buy one for myself
I’m seriously considering buying the adult version. Now that my toddler is all decked out in silk and wool I’m rethinking my own clothing choices!
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Anna K.
Beautiful, Light, and Sturdy
Cozy and comfy. Will fit for a long time.
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Rachelle
Perfect Jammies
These are so soft and comphy for all seasons, would highly recommend!
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