ergoPouch Cocoon Swaddle Sack 3.5 TOG – Baby Sleep Sack for 6-12 Months, Oatmeal Marle

Meet the ergoPouch Cocoon Swaddle Sack 3.5 TOG, a thoughtfully designed sleep solution built to grow with your baby. Sized for babies around 6–12 months, this sleep sack blends a cozy arms-in swaddle with a smooth transition to arms-out sleep as your little one develops. The 3.5 TOG warmth is ideal for cooler nurseries, helping your baby stay comfortably warm without loose blankets. Use with our Butterfly Cardi for hands-up swaddling (sold separately) to tailor the fit to your baby’s moments and milestones.

Smart design meets practical needs. The bell-shaped bottom gives hips and legs room to move while the snug, stretchy fit can help reduce the startle reflex, delivering a calm, more restful sleep environment. A two-way zipper makes diaper changes quick and fuss-free, and a protective zip cover guards delicate skin from irritation during night-time changes. This sleep sack isn’t just functional; it’s built to last, with durable fabrics and easy care that suit busy families.

Temperature-ready warmth

• 0.2 TOG for warm nurseries (71 °F / 22 °C and up).
• 1.0 TOG for moderate temps (67–75 °F / 20–24 °C).
• 2.5 TOG for cooler rooms (59–69 °F / 16–21 °C).
• 3.5 TOG for chilly nights (53–65 °F / 13–19 °C).

Fabric, care and safety-minded details

• 95% GOTS-certified organic cotton with 5% elastane for softness, breathability, and a gentle stretch.
• Non-toxic, water-based dyes help keep colors vibrant after multiple washes.
• Machine washable and tumble dry low for easy care on busy days.
• Skin-friendly design approved by the Eczema Association of Australasia, a reassuring choice for sensitive skin.

Designed for growth and everyday use, the Cocoon Swaddle Sack supports a secure, womb-like feel while enabling transitions as your baby starts to explore arms-out sleeping. It offers a flexible approach to baby sleep, presenting possibilities rather than guarantees. Keep expectations focused on comfort, ease, and sensory-rich routines that suit your family’s rhythm.