ergoPouch approaches baby sleepwear with a focus on developmental stages and thermal comfort. The Cocoon Swaddle Sack is a two-in-one design that adapts to your newborn’s changing needs, moving from a secure swaddle to a wearable sleep sack without requiring a separate product.

It starts as a snug, arms-in swaddle using internal arm flaps. When your baby shows signs of rolling or prefers arms-out, you simply unsnap the shoulder closures and convert it into a traditional sleep sack. The 0.2 TOG rating is for warm rooms above 71°F, using a 95% organic cotton and 5% elastane blend that’s breathable and moves with them. This single piece covers the first three months, simplifying your routine.

The fabric is soft and machine-washable, holding up well to repeated use. It’s worth noting the 0.2 TOG is specifically for very warm nurseries; you’ll need their higher TOG versions for cooler temperatures. The fit is generous up to 28 inches, giving most babies room to grow through the 0-3 month window.