ergoPouch Cocoon Swaddle Sack 3.5 TOG – Baby Sleep Sack for Arm-In/Out Comfort (0–3 Months, Oatmeal Marle)

One sleep solution for every stage of your baby’s first months

The ergoPouch Cocoon Swaddle Sack 3.5 TOG is designed to adapt as your newborn grows. It blends a snug arms-in swaddle with a gentle transition to an arms-out sleep sack, offering flexible sleep support that aligns with your baby’s changing needs without extra gear.

All-in-one design that evolves with your baby

From the earliest days to later months, this sack grows with your child. It features a two-way zipper for quick diaper changes and a protective zipper cover to keep delicate skin comfortable. For parents who want hands-up swaddling, the Butterfly Cardi can be used with this sack (sold separately).

• Converts from snug arms-in swaddle to arms-out sleep sack for growing babies
• Two-way zipper plus protective cover for swift, gentle diaper changes
• Butterfly Cardi compatibility enables hands-up swaddling when desired

Soft, safe fabric you can trust

Made from 95% GOTS-certified organic cotton and 5% elastane, the Cocoon Swaddle Sack feels soft and breathable against sensitive skin. It is approved by the Eczema Association of Australasia as a skin-friendly option, helping you feel confident in daily wear.

• Breathable organic cotton blend for comfort
• Non-toxic, water-based dyes retain softness and color after washes
• Machine washable and durable for multiple uses across siblings

Four warmth options for year-round comfort

Choose from four TOG ratings to match nursery temperatures across seasons. Avoids loose blankets, supporting a steadier sleep environment.

• 0.2 TOG for very warm rooms
• 1.0 TOG for mild coolness
• 2.5 TOG for cooler spaces
• 3.5 TOG for cooler nights

Safe sleep design with room to move

The bell-shaped bottom provides room for hips and legs to move freely, while the snug fit helps reduce startle reflex and encourage longer rest. Built to last, this sleep sack supports daily use as your baby grows.

Care that lasts

Durable and easy to care for, the Cocoon Swaddle Sack is machine washable and tumble dries on low. The dyes are non-toxic and water-based, helping colors stay vibrant after many washes.