Woolino4 Season Ultimate Baby Sleep Bag


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color: Earth

size: 0-2 Years



What weabout it
This silky-soft and hypoallergenic merino wool inner layer keeps baby comfy in all seasons. Also, one size works from two months to two years.


Sleep bags fit around your baby as an alternative to a blanket, creating a snug enclosure that still has room for arms and legs to move freely. And with a bag, there’s no chance that a blanket can cover your baby’s face.

Parents love this one for a few reasons—a big reason is that it keeps baby at the just-right temperature in all seasons thanks to the extra breathable Merino wool lining. High-quality merino wool naturally regulates temperature to help keep little bodies warm when it’s cool and cool when it’s warm. The outer layer is made with soft GOTS certified organic cotton.

The sleep bag is ideal for room temperatures 63-77 degrees. For a helpful bonus, it comes with a nursery thermometer and dressing guide so you know what to put baby in under the sleeping bag (i.e. layers; something sleeveless, etc.).

The Ultimate features double shoulder snaps and a two-way side zipper, so it opens up completely flat for easy dressing without waking baby. (The Basic option has a two-way zippers, but not the shoulder snaps.) For easy nighttime diaper changes, you can open the bottom zipper only. Zipper-pull guards to protect baby’s skin.

Another key difference is the Basic comes in traditional sizes, while the Ultimate Sleep Bag has universal sizing, so one bag can work from two months to two years. Parents love this.

For peace of mind, this sleep bag meets child safety requirements and all the fabrics and accessories are OEKO-Tex 100 certified (tested for 100 harmful substances). It’s also machine washable, but merino wool by nature is self-cleaning and doesn’t need to be washed as often as other fabrics.


  • Made with 100% Australian merino wool lining; organic cotton outer
  • Universal sizing: 2 months to 2 years
  • Breathable and hypoallergenic
  • Two-way zippers
  • Machine washable

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