ergoPouch Cocoon Swaddle Sack 3.5 TOG – Baby Sleep Sack, Arms-In/Out, Oatmeal Marle

Versatile sleep solution that grows with your baby

The ErgoPouch Cocoon Swaddle Sack 3.5 TOG is designed to accompany your little one from the first weeks through early months. It starts as a snug arms-in swaddle for newborns and transforms into an arms-out sleep sack with simple shoulder snaps. For hands-up swaddling, pair it with Butterfly Cardi (sold separately).

Four warmth ratings to suit every nursery

With TOG options ranging from 0.2 to 3.5, you can tailor warmth to the room temperature. Each option helps keep your baby at a comfortable, stable temperature without the need for loose blankets, reducing the likelihood of sleep disruptions.

• 0.2 TOG (71 °F / 22 °C and warmer)
• 1.0 TOG (67–75 °F / 20–24 °C)
• 2.5 TOG (59–69 °F / 16–21 °C)
• 3.5 TOG (53–65 °F / 13–19 °C)

Soft, skin-friendly fabric you can trust

Crafted from 95% GOTS-certified organic cotton and 5% elastane, the fabric is soft, breathable, and gentle on sensitive skin. The garment-dye uses non-toxic, water-based dyes that stay vibrant and comfortable wash after wash. It’s recognized by the Eczema Association of Australasia as a skin-friendly option for babies with eczema or irritations.

Practical design for night-time changes

A two-way zipper gives quick access for diaper changes in the dark, while a protective zip cover protects delicate skin from irritation. Shoulder snaps make it easy to transition between swaddle and sleep sack without disturbing baby.

Supportive fit for healthy hip and leg development

The bell-shaped bottom offers room for hips and legs to move, while a stretchy, secure fit helps calm the startle reflex. The design aims to mimic a secure, womb-like feel, supporting longer, more restful sleep.

Durable, safe, and easy to care for

Built to withstand multiple babies, the Cocoon Swaddle Sack is machine washable and quick to dry. It uses durable, non-toxic dyes and remains soft after many washes.

Product specifics

Size: newborn to early months (0 months). Color: oatmeal marle. Brand: ergoPouch.