You make the memories.We keep baby dry and warm.
Buttery-soft Australian merino for everyday life, from city mornings to snowy weekends and every night in between.
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Thousands of parents love merino
Our nursery swings from warm at bedtime to cool by the early hours, and this is the one sack I don't second guess. It feels soft instead of clammy after a long evening feed.1.2K
Started with one piece to test it, and now half his drawer is merino. I'm hooked.847
I genuinely didn't know wool could feel this soft. I was braced for scratchy and it's the opposite. It's now the first sleep sack I reach for as the evenings start cooling down.2.3K
I found out "bamboo" fabric is actually rayon made with a chemical process. Switched to merino and never looking back.596
I didn't get the hype about merino until we tried it. It's soft, it breathes, and it doesn't smell even after a full day.1.8K
Plenty of room for her to kick, and it still looks tidy on. The Rodeo print is even better in person, and the organic cotton outside feels lovely every time I pick her up.412
Everyone pushed bamboo on me at my baby shower. Honestly, merino is in a different league.3.1K
I was worried wool would feel scratchy. This is softer than most of our cotton pieces.729
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Why babies wake up damp, cold, and crying at 2 AM
Babies can’t throw off blankets when they get warm, so they sweat. When a baby sleeps in bamboo viscose or fleece, that fabric holds wet moisture directly against their skin. By 2 AM, when the nursery cools down, that trapped dampness turns cold and clammy. Your baby wakes up shivering and crying to be resettled.
Superfine merino stops that cycle. Merino fibers absorb sweat as vapor and let it move off the skin into the air before it can pool as cold liquid against their chest. Your baby stays warm, dry, and asleep.
- Moves moisture vapor before skin turns damp
- Buffers room temperature swings throughout the night
- Soft, non-prickle superfine fibers
Not all soft sleepwear protects your baby’s sleep.
How natural Australian merino compares to chemically processed bamboo viscose next to baby skin.
Moisture and sweatMerino moves sweat away as vapor. Bamboo viscose soaks it up and holds it on the skin.
Changing room temperaturesMerino traps warm air in its crimp and moves moisture away, so skin stays warm and dry. Bamboo viscose goes cold when wet.
How it’s madeMerino grows on sheep. Bamboo viscose is pulp dissolved in harsh chemicals and extruded as rayon.
One sack for changing nights
A fine Australian merino lining inside smooth organic cotton keeps your baby’s chest comfortably dry as bedroom temperatures swing. Made long, 37½ inches, so it fits from 3 to 24 months, with a zip that opens from the bottom up for quick night changes while their chest stays covered.
Shop the 3-Seasons Sack
The dry layer next to their skin
Superfine 19.5-micron Australian merino bends softly against baby skin without scratching. Wear it on its own, or as the first layer under a raincoat, vest or onesie. It keeps your baby’s chest and back dry from the morning change to the afternoon nap. Envelope shoulders pull down easily for mess-free changes.
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Mix any 3 pieces for 10% off, or 5+ for 15% off. Applied automatically at checkout.
The generational blanket
Shop allSubstantial 550gsm knit in Australian merino wool. Crafted for stroller walks, couch cuddles, tummy time, and toddler beds later: dense, naturally breathable, and made to pass down.
- Free US shipping over $100Ships from our warehouse in 1–2 business days
- 30-day returnsUnworn and unwashed, with tags on
- Machine washableGentle wool cycle, then hang to dry
- Woolmark® & OEKO-TEX® certifiedFiber tested, and screened for harmful substances
Good to know
All FAQsWill merino make my baby too hot, or too cold?
Merino takes up sweat as vapor and releases it before skin turns clammy, but dressing for the room still matters. At 68–72°F, a long sleeve bodysuit under the 3-Seasons sack is right. Add a onesie in cooler rooms, switch to a singlet in warmer ones, and move to the Quilted Winter Sack below 61°F.
To check, feel your baby’s chest or the back of their neck: warm and dry is right. Sweaty means take a layer off.
Which size do I need?
Our sleep sacks are one size, 37½ inches long, and fit from 3 to 24 months. Under 3 months, start with the Merino Fitted Swaddle. Every clothing page has a size guide with measurements.
How do I wash it?
Machine wash on a gentle wool cycle with liquid wool detergent. Hang sleep sacks to dry with the zip open, and lay clothing flat. Skip the tumble dryer, soaking, bleach, and stain sprays.