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

Easy Baby Sleep Transition with Arms Up Half-Length Sleeves

The Transitional Swaddle Sack from SwaddleDesigns is designed to ease your newborn through a gentle sleep transition. With arms-up half-length sleeves and foldover mitten cuffs, this wearable blanket blends comforting security with growing flexibility—supporting your baby as they explore new sleep patterns while staying snug and cozy.

What makes it special

• Arms-up design featuring half-length sleeves and foldover mitten cuffs that can be opened or closed, allowing subtle adjustments in snugness and self-soothing opportunities.
• Smart safety flexibility: if your baby rolls, the sleeves help the arms reposition to support breathing and comfort without restricting movement.
• Two-way zipper with pulls: zips down from the top for easy screening and up from the bottom for quick diaper changes, all in 100% cotton with a light TOG of 0.5.
• Designed by a nurse and protected by US patent 11,812,795 with additional international patents, reflecting a thoughtful approach to transitional wear.

Who this is for

Ideal for infants who sleep best with arms up, those beginning to roll, or babies who outgrow a traditional swaddle. The 1/2-length sleeves create snugness when cuffs are closed and permit hand access for soothing when opened.

Fabric & care

• 100% cotton knit fabric provides a soft, breathable, and gentle stretch against your baby's skin.
• TOG 0.5 keeps a comfortable warmth level; machine wash warm and tumble dry low for easy care.

Why families choose this transition wear

Designed with Baby’s comfort and caregiver practicality in mind, the Transitional Swaddle Sack offers a reliable step between full swaddle and a wearable blanket. Its flexible cuffs, easy diaper-access zipper, and nurse-designed reasoning can help create predictable bedtime routines without sacrificing security.

Size and fit notes

• Size guidance by weight: S = 6-14 lb, 0-3 months; M = 14-21 lb, 3-6 months; L = 21-24 lb, 6-9 months.
• Soft, stretchy fabric supports natural flexion while keeping arms close for comforting snugness.

Color and design details include Heathered Oatmeal, a neutral tone that blends with many nursery palettes. The combination of practical features and soft fabric aims to make bedtime routines simpler and more predictable for caregivers and babies alike.