SwaddleDesigns Transitional Swaddle Sack – Arms Up Sleeves, 6-9 Months, 21-24 lb, Heathered Butterum

Meet the SwaddleDesigns Transitional Swaddle Sack

The Transitional Swaddle Sack is a thoughtful bridge between traditional swaddling and a wearable blanket. Sized for babies around 6–9 months (roughly 21–24 lb) and finished in Heathered Butterum, it blends soft, breathable cotton with practical design details that support calm, rhythmic sleep routines without promising certainty.

Arms Up Comfort and Self-Soothing Potential

The arms-up arrangement mirrors a natural sleeping position for many infants. The ½-length sleeves with foldover mitten cuffs can be worn closed to provide partial startle reflex suppression, while leaving room to open if the baby wants to self-soothe by touching their hands.

Transition, Fit, and Positioning

Designed as a wearable blanket rather than a tight wrap, this sack aims for a snug, hip-healthy fit that still allows natural leg movement. If a roll occurs, the baby’s arms can help lift the torso and head to access air, which can feel reassuring for caregivers during the night.

Key Features at a Glance

• 2-way zipper with dual pulls simplifies diaper changes from top or bottom.
• Foldover mitten cuffs may be worn open or closed; you can open one or both for self-soothing or close to protect from facial scratches.
• 100% cotton knit offers breathable softness; TOG 0.7 makes it a versatile layer for moderate temperatures.
• Machine washable on warm with tumble-dry-low settings for everyday practicality.
• Designed by a nurse and protected by US patent 11,812,795 with additional international patent coverage.

Who This Is For

Ideal for babies who prefer an arms-up sleep style, are starting to roll, or tend to outgrow traditional swaddles. Size guidance follows weight ranges: S 6–14 lb, M 14–21 lb, L 21–24 lb.

Care and Durability

• Durable, soft cotton knit remains comfortable wash after wash.
• Practical design intended for everyday use by busy caregivers.