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The only cozier: the womb. A down alternative sack wrapped in silky soft bamboo rayon keeps your little nugget secure while our one-of-a-kind WONDERZiP keeps them covered, even during diaper changes. So get ready to sleep a lot. Like, a lot a lot.
So magically fluffy you’ll want one for yourself
Stuffed with hypoallergenic microfiber fill that mimics the feel and insulating ability of luxury down.
Our Patented 4-way WONDERZiP zipper keeps baby covered & cozy for easy peasy diaper changes
Research shows that sleeping under an evenly distributed weight, from shoulder to toe, soothes baby into a deeper sleep cycle.
Being gently cocooned in a comforting weight increases serotonin & relaxation, and naturally reduces anxiety by giving the same all-over sensation as a full-on giant cuddle
Wider + longer fit to comfortably fold and kick those legs
Long sleeves for extra warmth

Iâve been buying this sleep sack for my baby since she is 6 months old. The fabric is so soft and cozy. My favorite thing about it is that the long sleeve makes it perfect through the winter or even in the summer for air conditioned rooms. I know my baby is sleeping comfortably and well when in it.