Knirose Transitional Swaddle Sack – Arms Up Sleep Sack for 6-12 Months

Discover a cozy, breathable cotton wearable blanket that grows with your baby. The Knirose Transitional Swaddle Sack with Arms Up Length Sleeves and Mitten Cuffs is designed for babies who prefer a snug, secure feel and for those just starting to roll. This sleep sack blends familiar comfort with practical features to support calmer sleep routines without rigid constraints, offering a gentle path from traditional swaddling to a wearable blanket.

What makes this swaddle special is the arms-up design paired with carefully shaped sleeves and built-in mitten cuffs. You can choose to cover tiny hands for scratch protection or leave them free to explore. The cuffs can be opened or closed to adapt to your baby’s mood and needs, creating a reassuring, womb-like feel that many parents find comforting during night cycles. The fabric is a soft, breathable cotton knit that moves with your baby, offering a secure yet non-restrictive sense of containment as your little one wriggles and shifts.

The design also aims to support safe, flexible sleep transitions. The sleeves are crafted to allow partial suppression of the startle reflex while still letting air reach your baby’s face and head if they roll onto their tummy. This balance of snugness and mobility can help your baby settle more easily between sleep phases, without the tightness of a traditional swaddle.

Easy night-time changes and ongoing comfort

diaper changes are made smoother thanks to a practical two-way zipper that runs from the side toward the bottom. This setup enables quick, quiet diaper access with minimal disruption, so you can attend to bathroom needs without fully waking your little one. The soft, stretchy cotton knit adds to a comfortable night routine you can trust for everyday use.

• Snug, secure feel without the stiffness of a traditional swaddle
• Hands can be covered or free to support air access and movement
• Fold-over cuffs protect from scratches when open or closed

• Breathable cotton knit helps regulate temperature for comfortable nights
• Two-way zipper enables quick, quiet diaper changes
• Arms-up sleeves stay in place as your baby wriggles

Designed for babies who are starting to roll or moving away from classic swaddles, this wearable blanket aims to provide a familiar sense of security while offering practical features for daily care. It works well at home or while traveling, adapting to your baby’s pace and sleep rhythms as they grow.

Care and materials

Made from soft cotton knit, the swaddle sack is gentle on delicate skin and easy to wash. Following care instructions helps preserve its shape and comfort over time.

Note: Always follow pediatric sleep guidance. This product is intended as a transition aid to support ease and convenience, not a medical device.