Swaddelini Black Swaddle Sleep Sack

The Swaddelini Black Swaddle Sleep Sack offers a seamless, 3D-knit sleep solution that comforts and nurtures your baby throughout naps and nights. Engineered with patented Hug Technology® that mimics a gentle embrace, it helps calm startle reflexes and supports safer, more peaceful sleep. Its stretchable, moisture-wicking fabric moves naturally with your baby and transitions into a wearable blanket as your little one grows. Designed for both comfort and convenience, this swaddle sleep sack is available in sizes for newborns and older infants, providing secure, breathable comfort from early days through development.

Seamless 3D-knit construction for cozy, secure wear

Hug Technology® mimics the feel of a gentle embrace

Comfortably stretchy fabric allows natural movement

Moisture-wicking for dry, comfortable sleep

Transitions into a wearable blanket as baby grows

Available in multiple sizes to fit newborns and infants

Breathable and flexible for all-season use

Easy care and long-lasting performance

Materials: Soft, seamless 3D-knit fabric (recycled nylon-blend)

Size options: Small (fits approx. 6–12 lb) and Large (fits approx. 12–18 lb)

Weight (sleep sack): Lightweight, designed for infant comfort

Stretch: Elasticized knit allows natural movement

Care: Machine washable

Design: No snaps, zippers, or velcro, slip-on style