SwaddleDesigns Transitional Swaddle Sack | Arms-Up Sleeves, 6-9M, Heathered Jadeite

The Transitional Swaddle Sack from SwaddleDesigns offers a thoughtful, breathable path from traditional swaddling to a wearable blanket. Designed by a nurse and crafted from 100% soft cotton, this sack provides a cozy, flexible fit that can grow with your baby as they begin to explore more movement. The heathered jadeite color adds a gentle, nursery-ready look to your bedtime routine while the fabric’s knit keeps things breathable and comfortable night after night.

Who it’s for

Ideal for babies who prefer to sleep with arms up, those starting to roll, or little ones who outgrow a snug traditional swaddle. The design supports a secure, flexed arm position while still giving your baby the freedom to shift or lift their torso when needed.

Key design features

• The transitional design lets baby self-soothe and supports a gradual move from swaddle to wearable blanket, perfect for arms-up sleepers and early rollers.
• Arms-up sleeves with 1/2-length cuffs and foldover mitten cuffs provide a snug feel and optional protection against facial scratches.
• Foldover cuffs can be opened or closed, so you can choose self-soothing access or arm protection as needed.
• Hip-Healthy design and a snug, yet comfortable fit help keep baby in a secure, natural position as they grow.
• Two-way, double-pull zipper: easy to place baby in the sack from the top, and simple diaper changes from the bottom.

Materials, care, and temperature

• Made from 100% soft cotton with a lightweight knit for breathable everyday wear.
• TOG 0.5 provides a lightweight layer suitable for moderate room temperatures.
• Care is straightforward: machine wash warm and tumble dry low, designed to fit busy family schedules.
• Patented features (US 11,812,795 & D833,613) underlie the unique transition design, with patents in multiple regions.

Sizing, color, and real-life use

Size Large (6-9 months, 21-24 lb) comes in Heathered Jadeite—a soft, gender-neutral tone that suits many nurseries. The top-entry design makes it easy to slide baby in, while the bottom zipper supports quick diaper changes during night wakes or naps. Use with babies who may roll over or who demonstrate a preference for an arms-up position, and enjoy a smoother transition from swaddle to a wearable blanket.

While no product can guarantee a specific sleep outcome, caregivers often find this transitional sack helps with secure comfort, simple routines, and flexibility during the night. Designed to adapt as your baby grows, it’s a practical option for families moving away from traditional swaddling without losing that comforting hug of fabric around little arms.