Swaddelini Large Swaddle Sleep Sack – Easy 0-3 Month Sleep, 12-18 lb, Made in USA, Blue

Soft, secure sleep for tiny nights

Your baby deserves a snug, soothing environment for bedtime. The Swaddelini Large Swaddle Sleep Sack is the world’s first 3D knit seamless swaddle, delivering the ideal blend of comfort, safety, and freedom for little sleepers. Sized for babies 0-3 months and weighing 12-18 pounds, this blue sleep sack creates a cozy sanctuary where calm sleep can unfold naturally.

From swaddle to wearable blanket

As your baby grows or begins to roll, the sleep sack conveniently transitions into a wearable blanket. Simply leave the arms out to preserve safety and comfortable movement, giving you a practical, grow-with-you solution for nightly routines.

Hug Technology and safety-forward design

Hug Technology gently cradles your baby to help self-soothe through Moro reflex and active sleep. Crafted to align with AAP guidelines, the sleep sack ensures a secure chest fit while allowing hip-friendly looseness for natural, comfortable movement.

Materials, sustainability, and care

• Soft, sustainable, post-consumer recycled nylon keeps textures gentle against delicate skin
• Moisture-wicking fabric helps maintain dry, comfortable nights
• Proudly made in the USA to exacting standards of quality and environmental care

Practical benefits and use cases

In everyday routines, parents report calmer bedtimes, smoother transitions between swaddle and blanket, and a dependable sleep companion that feels reassuring without restricting movement. This sleep sack also serves as a thoughtful gift for new parents who value practical, safety-conscious design.

Care and product highlights

• 3D knit seamless construction minimizes irritation during changes and soothing.
• Hug Technology provides a gentle self-soothing cue without limiting movement.
• Designed for 12-18 pounds and 0-3 months to ensure a proper fit and comfort.