4 Season Sleep Sack

  • $99.00


4 Season Sleep Sack Cream/Tan and Blue Sailboats
 
This award winning 4 Season Merino Wool Baby Sleep Bag will keep your baby at a perfect temperature all year round. That means there’s no need to worry about which weight sleep sack to use, or whether your baby will be too hot or cold while sleeping – they’ll always be just right!

It’s 100% natural, fully machine-washable, and is excellent value, as it comes in one universal size that fits babies from 2 months to 2 years. This is the only sleep sack your child will need, right up until they turn two.
  • 100% Natural 
    Pure silky-soft hypoallergenic merino wool lining and the finest organic cotton outer.
  • 4 Season use 
    Unlike most of the sleep sacks that come in either winter or summer weight/TOG rating, the Woolino 4 Season Sleep Bag can be used year-round. It’s suitable for any room temp. 63-77F (17-25C). Because of Merino’s unique ability to regulate body temperature, it keeps your baby warm when it's cold and cool when it's hot.
  • Grows with your baby 
    It has a universal size so it can be safely used for babies 2 months up to 2 years old. And for smaller babies, simply close the underarm snaps to adjust the fit.
  • Excellent value 
    With Woolino Ultimate 4 Season Sleep Bag, you don’t have to buy a different sleep sack every few months. It is the only baby sleep sack your baby will need, in winter or summer, until they turn two years old.
  • Designed to be practical 
    It features double shoulder snaps and a two-way side zipper, so it opens up completely flat for easy dressing without waking the baby! For easy nighttime diaper changes, you can open the bottom only. It also has zipper-pull guards to protect baby's skin and to prevent them from chewing on the zipper pull.
  • Travel friendly 
    A closable seat-belt opening allows for easy transfer between stroller, car seat and crib, so you can keep your baby’s sleep routine intact while on the go.
  • Easy care 
    In addition to Merino being naturally anti-bacterial and odor repellent, Woolino sleeping bags are machine washable and can be tumble dried on low heat. See care instructions here.
  • Reduces the risks of SIDS 
    It is a healthy and safe alternative to blankets –helps your baby stay covered through the night and reduces the risk of suffocation, as fabric stays clear of their face. What’s more, the exceptionally breathable Merino wool regulates body temperature and so prevents overheating – a risk factor for SIDS. The sleep sack also promotes back sleeping.
  • Naturally fire resistant 
    Wool is naturally flame resistant and the safest fiber to have next to your baby’s body. Woolino sleep bags meet all US CPSC children safety requirements.
  • Certifications 
    Woolino 4 Season Sleep Bags are made with Woolmark and Oeko-Tex 100 certified merino wool and GOTS and Oeko-Tex 100 certified organic cotton. We use nickel, lead and phthalates free YKK snaps and zippers, which are also Oeko-Tex 100 certified.
  • Awards 
    #1 rated and #1 selling Merino wool baby sleep bag in US and Canada and Winner of Mom's Choice Award, Creative Child's 2012 Top Choice of the Year Award and Green Scene Mom Award 2016.
  • Free Nursery Thermometer with a dressing guide included.


  • Brand: woolino
  • Infant Size: 2-24 months
  • Color: Cream
  • Fabric: Merino Wool
  • Fabric: Organic Cotton


Item Number: 9057-5