ergoPouch Cocoon Swaddle Sack 1.0 TOG - 3-6 Months Willow | Arms-In/Out Sleep Sack

All-in-one sleep solution that grows with baby

The ergoPouch Cocoon Swaddle Sack 1.0 TOG is designed to adapt as your child grows, from a snug arms-in swaddle for newborns to an arms-out sleep sack. With shoulder snaps and the option to use the Butterfly Cardi for hands-up swaddling (sold separately), this design aims to provide a calm, familiar feel across sleep stages without relying on loose blankets.

Constructed for comfort and year-round use, the Cocoon blends breathable fabrics with practical features that many parents appreciate during late-night routines and daytime naps alike.

Stage-ready design that adapts to your baby

The sack begins with a secure arms-in option and transitions to arms-out as your baby grows, supported by shoulder snaps that make changes smooth and less disruptive. A bell-shaped bottom gives hips and legs room to move, while the snug fit helps recreate the secure, womb-like sensation many babies prefer.

• One design, multiple stages: arms-in for newborn snugness, arms-out as baby grows, no extra blankets needed.
• Shoulder snaps enable easy, quick transitions without waking baby.
• Compatible with Butterfly Cardi for hands-up swaddling (sold separately) to suit baby preference.
• Breathable fabric supports comfortable sleep across sessions.

Choose the right warmth with TOG for year-round comfort

Available in four TOG ratings to fit nursery temperatures, you can tailor warmth while maintaining a safe sleep environment. The range includes light options for warm rooms and plusher choices for cooler nights, with intermediate levels to suit in-between conditions.

• 0.2 TOG: light warmth for warmer rooms (around 71 °F / 22 °C).
• 1.0 TOG: balanced warmth for mid-range temps (67–75 °F / 20–24 °C).
• 2.5 TOG: cozy warmth for cooler nights (59–69 °F / 16–21 °C).
• 3.5 TOG: toasty warmth for chilly rooms (53–65 °F / 13–19 °C).

Soft, skin-friendly materials you can trust

Made from 95% GOTS-certified organic cotton and 5% elastane, the sack is soft, breathable, and gentle on sensitive skin. Non-toxic, water-based dyes help keep colors vibrant after repeated washes, and the fabric is eczema association-approved for skin-friendly choices.

Practical design for busy nights

The two-way zipper with a protective cover makes diaper changes quicker and kinder to delicate skin. The durable, machine-washable fabric is built to last through multiple babies, providing practical value without compromising comfort.

What you might notice in real life

Parents often report calmer bedtimes, smoother transitions as tiny sleepers grow, and less need for loose blankets. While every baby is unique, the Cocoon Swaddle Sack offers a consistent, cozy environment that supports a range of sleep preferences and nursery setups.