Long Sleeve Sleep Sack - Black B4780

The Swaddelini Arms Out™ Long Sleeve Sleep Sack in Black offers comfort and freedom for babies transitioning out of traditional swaddles. Engineered with signature Hug Technology®, it gently supports and soothes little ones as they begin to roll and explore — helping calm startle reflexes and promote restful sleep. Breathable, seamless knit fabric provides a cozy yet flexible sleep surface, while long sleeves add warmth. Designed for growing infants, this arms-out wearable blanket delivers safety, comfort, and easy care, making bedtime simpler for both baby and caregiver.