SwaddleDesigns Transitional Swaddle Sack – Arms Up, Half-Length Sleeves, 14-21 lb (3-6 mo) Tiny Hedgehogs

The SwaddleDesigns Transitional Swaddle Sack is crafted for babies moving from traditional swaddling to a wearable blanket. It combines a gentle arms-up silhouette with partial sleeve coverage and mitten cuffs, offering a secure feel while allowing room for natural movement. The Tiny Hedgehogs print adds a comforting visual for bedtime routines and cuddly moments alike.

Why this transitional design matters

Designed to support a smooth sleep transition, the sack aims to mirror the snug, cozy sensation many babies associate with swaddling while giving them space to explore movement as they grow. The arms-up configuration, along with the fold-over mitten cuffs, provides flexible control over coverage, touch, and self-soothing opportunities without restricting breathing or air flow.

Key benefits and features

• Arms Up design with 1/2-length sleeves and mitten cuffs can be worn open or closed to help baby self-regulate and rest with a familiar hug-like fit.
• Partial suppression of startle reflex supports a calmer, more settled sleep routine without limiting air access or mobility.
• Hip Healthy design keeps legs in a natural flexed position, aiding comfortable movement during sleep and play.
• 2-way double-pull zipper simplifies diaper changes and quick dressings, reducing disruption to baby and caregiver alike.

Quality, care, and fit you can rely on

• 100% cotton fabric with a TOG 0.5 provides a soft, breathable layer suitable for moderate temperatures.
• Weight-based sizing helps you choose S (6-14 lbs / 0-3 mo), M (14-21 lbs / 3-6 mo), or L (21-24 lbs / 6-9 mo).
• Machine washable and easy to tumble dry for busy parents and consistent wear.

How to use

Start by selecting the size that matches baby’s weight. Place baby with arms in, zip up the 2-way zipper, and decide whether to wear cuffs open or closed. The design supports a snug, secure feel while allowing airflow and natural leg movement as needed for a comfortable transition.

Important notes

US Patent 11,812,795 is listed for this wearable blanket, with additional WW patents available online. This product is intended to support a comfortable sleep transition and is not a medical device.