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4 Season Sleep Sack - Ultimate Merino Wool and Organic Cotton Sleeping Bag - Two-Way Zipper Adjustable Universal Size Sleep Sack

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Four happy babies dressed in Woolino 4 Season Ultimate Sleep Sacks

The Benefits of Wearing Merino Wool

Merino wool is odor resistant, supremely soft, naturally breathable, and temperature regulating.

100% Natural, wicking moisture away and regulating body temp., machine-washable, and an excellent value as it comes in a universal size that fits babies from 2 months to 2 years - the 4 Season Ultimate Sleep Bag is the only wearable blanket your child will need, right up until they turn two.

  • 100% Merino Wool Lining / 100% Organic Cotton Outer
  • Imported
  • #1 RATED and #1 SELLING merino wool baby sleep sacks in US and Canada since 2010. Creative Child's 2018 Top Choice of the Year Award & winner of 2021 Cribsie Award and Mom's Choice Award
  • REDUCE OR ELIMINATE SLEEPLESS NIGHTS - When baby sleeps better, so do parents. PREMIUM FABRICS for best comfort: Australian merino wool lining - 100% natural, luxuriously soft, and temperature regulating. GOTS certified organic cotton outer
  • THE ONE AND ONLY sleep sack your baby will need until they turn two. UNIVERSAL SIZE: 2 months – 2 years. 4 SEASON USE: Merino wool regulates body temperature so it can be used year-round.
  • MAXIMUM VERSATILITY - double shoulder snaps and two-way zipper system for easy dressing and diaper changes; Closable seat-belt slots for easy transfer between stroller, bouncer, crib, etc. Under-arm snaps allow this wearable blanket to grow with your baby and make it the perfect swaddle transition product
  • PREMIUM QUALITY - Buy with confidence from , a trusted US company, offering US customer service and industry leading warranty for your peace of mind. The industry leader in merino wool baby essentials since 2010.