Infant Sleep Sacks

Product Description

Woolly Boo® Infant Sleep Sacks are perfect regardless of whether it is naptime or nighttime, as your little one will relish snuggling down into our luxurious bedding! The organic wool filler is layered with un-dyed, natural cotton, rendering our product soft, breathable and hypoallergenic. A single color cotton fabric of your choice is sewn inside, followed by an outside fabric of your choice (usually a durable, easy-to-maintain damask), and it is finished off with a zipper. All seams are protected so that they do not irritate your child’s skin. Because the Woolly Boo® Infant Sleep Sack can also act as a wearable blanket, all you need is a diaper underneath! What could be easier?


  • Small (24” long) is appropriate for children from birth to 6 months old
  • Medium (31” long) is appropriate for children from 6 to 12 months old
  • Large (34” long) is appropriate for children from 12 to 18 months old
  • X Large (36″ long) is appropriate for children from 18 to 24 months old

*Large and X Large Woolly Boo® Sleep Sacks can also have openings at the bottom for your little one’s feet, in case he or she feels like standing or exploring while wearing the Sleep Sack. Please feel free to let us know if you want them.


The best way to maintain your Woolly Boo® Infant Sleep Sack is by exposure to fresh air. Spot clean. We do not recommend washing wool unless it is absolutely necessary, as traditional detergents strip away many of the natural benefits of wool. In extreme cases, soak the product in cold water with a capful of white vinegar or use a cleaning solution that is specifically designed for wool. You can also wash it in a machine that has a specialized “wool” or “delicate” cycle. Air dry flat.


Product Reviews

“We love the sleep sack and our baby does too. Every time we put him in the sack, he just snuggles, smiles and goes to sleep. It’s amazing.”

Alexandra Hampton, New York, NY

“My son loves his Woolly Boo sleep sack, as do I. I'll be back for more.”

Olga M., Martinsville, NY

“I can't believe it, but my daughter is sleeping 2 hours longer each night since we got the Woolly Boo sleep sack. We are now getting a crib bumper, a mattress pad, and a linen sack for the summer.”

Nicole A., New York, NY

Buy Now $165

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