SwaddleDesigns Transitional Swaddle Sack – Arms Up Sleeves, 0-3 Months, Heathered Teal

Overview

Introducing the SwaddleDesigns Transitional Swaddle Sack, crafted to ease a newborn’s move from a traditional swaddle into a wearable blanket. Designed for babies who sleep better with arms up, who are starting to roll, or who tend to break out of classic swaddles, this small-size sack supports a natural, flexed position in a breathable, soft-knit fabric. Weights 6-14 lb (0-3 months) are ideal for the small size, while the heathered teal color adds a gentle, soothing touch to the nursery. The fabric is 100% cotton with a light TOG of 0.5, offering warmth without heaviness, and it is machine washable for busy parents.

Why this transitional swaddle helps

• Arms Up Half-Length Sleeves with foldover mitten cuffs provide gentle Moro reflex suppression while keeping arms snug but not restricted.
• If baby rolls over, the design allows arms to assist with repositioning, helping maintain a natural sleep posture.
• The 2-way zipper (top to place baby in, bottom to change diapers) simplifies nightly routines and reduces disturbance.
• Designed by a nurse with a focus on comfort, accessibility, and the baby’s natural feel during sleep.
• Recognized by IHDI as hip-healthy, positioning babies in a secure and natural alignment without overly tight restraints.

Fabric, fit, and care

• 100% cotton knit fabric offers softness, stretch, and breathability for quiet, cozy sleep.
• TOG 0.5 provides light warmth suitable for moderate room temperatures and year-round use.
• The zip design features two pulls for easy diaper changes without fully undressing baby.
• Care is simple: machine wash warm, tumble dry low to maintain fabric integrity and softness.

Sizing and use scenarios

Size S is intended for 6-14 lb babies (0-3 months). The weight-based approach helps you find the right fit as your infant grows, with additional size guidance available for larger intervals. This transitional wearables approach is ideal for babies who prefer arms up or are approaching the rolling milestone, offering a comfortable, secure feeling without the constraints of a traditional swaddle.

Patents and safety notes

The Transitional Swaddle Sack is backed by US patents (including 11,812,795) and has patents in the EU, UK, CA, CN, JP, and other countries. While it supports a natural sleeping position, always follow safe sleep guidelines and monitor your baby during sleep.