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4-Season Merino Wool & Organic Cotton Baby Sleep Sack

$76.30  
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Category: blanket

Introducing Woolino Merino Wool Baby Sleep Sacks

Industry Leader in Comfort and Innovation

Affectionately known as the #1-rated and #1-selling merino wool baby sleep sacks in the US and Canada since 2010, Woolino sleep sacks have earned a reputation for unparalleled comfort and functionality.

Award-Winning Quality

Our products have been recognized for excellence, including the Creative Child's 2018 Top Choice of the Year Award, and the 2021 Cribsie Award and Mom's Choice Award. Trust in Woolino for the best in merino wool baby essentials.


Why Woolino Sleep Sacks Are Special

Reduce Sleepless Nights

Enjoy peaceful nights with your baby. Woolino sleep sacks help ensure better sleep for both baby and parents, offering a peaceful solution to sleepless nights.

Premium Fabrics for Best Comfort

Experience the luxury of Australian merino wool lining, naturally soft, temperature regulating, and 100% natural. Paired with GOTS certified organic cotton, these materials provide the highest level of comfort and safety for your baby.

Universal Size for Years of Use

Perfect for your baby from 2 months to 2 years, the universal size ensures a comfortable fit throughout the first two years of your child’s life.

Four-Season Use

Thanks to the temperature-regulating properties of merino wool, Woolino sleep sacks can be used all year round, making them a versatile addition to your baby’s wardrobe.


Maximum Versatility

Easy Dressing and Diaper Changes

With double shoulder snaps and a two-way zipper system, changing and dressing your baby becomes a breeze, ensuring ease and convenience.

Seamless Transitions

  • Stroller: Quick and easy transitions between stroller and sleep sack.
  • Bouncer: Ideal for keeping baby cozy during bouncer time.
  • Crib: Perfect for sleep in the crib, promoting safe and comfortable slumber.
  • Swaddle Transition: As your baby grows, the under-arm snaps allow the sleep sack to grow with them, becoming the perfect swaddle transition product.

Premium Quality and Trust

Reliable US Company

Woolino is a trusted US company, dedicated to providing faultless customer service and industry-leading warranty. Shop with confidence, knowing your investment is protected.


Experience the difference with Woolino merino wool baby sleep sacks. Enjoy the best in comfort, quality, and innovation, backed by years of expertise and numerous awards.

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