Choosing Between Sleep Sacks and Swaddles for Your Baby

According to the American Academy of Pediatrics, babies should not sleep with loose bedding in their cribs until they are at least 12 months old. Without loose blankets, parents have two main options to keep their babies warm during sleep: swaddles and sleep sacks. Each has distinct advantages and uses.

Swaddles

Swaddles are designed to wrap infants tightly, which can help them sleep soundly. Traditional swaddles are thin blankets that require wrapping the baby in a specific way. Many modern swaddles include fasteners to simplify use and minimize errors that may lead to the blanket coming loose. Swaddles secure the baby’s arms, which helps curb the Moro reflex—a reflex causing sudden arm movements that can wake babies.

Pros of Swaddles

• Help suppress the Moro reflex, aiding longer sleep for newborns.
• Mimic the sensation of being held, offering comfort and security.
• Generally affordable, with prices ranging between $5 and $15.

Cons of Swaddles

• Only safe for babies until around 2 months old, as rolling babies need their arms free.
• Traditional swaddles can be tricky to secure, especially with active babies.
• Not all babies enjoy being swaddled.

Best Swaddles

Comfy Cubs Swaddle Blankets: These come with straps for secure fastening and are made of 100% breathable cotton, enhancing comfort.

SwaddleMe Original Swaddle: Available in various colors and patterns, these feature soft, 100% cotton construction, including an organic option.

Sleep Sacks

Sleep sacks serve as wearable sleeping bags for babies, functioning like a vest with either long sleeves or armholes at the top and a loose sack at the bottom. Suitable from birth to around 18 to 24 months, sleep sacks are secured with zippers, either along the front or side.

Pros of Sleep Sacks

• Designed to prevent covering the baby’s face or causing tangling.
• Allow free use of arms, safe for babies who can roll over.
• Easy to put on and remove, facilitating middle-of-the-night diaper changes.

Cons of Sleep Sacks

• As babies grow, larger sleep sacks are needed, with costs ranging from $10 to $30.
• Do not suppress the startle reflex or offer light pressure like swaddles.

Best Sleep Sacks

Burt’s Bees Baby Baby Beekeeper Wearable Blanket: Made of 100% cotton, this sleeveless sleep sack comes in various sizes and colors, suitable for up to 18 months.

Simple Joys by Carter’s Baby Wearable Blankets: Constructed from cozy microfleece with long sleeves, these are ideal for cold weather and offer great value with two per pack.

Making Your Choice

Both swaddles and sleep sacks have their advantages. For newborns, swaddles might be beneficial, especially if they help the baby sleep better. For older babies, especially those who roll over, sleep sacks provide a safe and convenient alternative to loose blankets. Trying out both on your baby can help determine which suits them best. Purchasing a couple before buying in bulk is wise in case the baby shows a preference.