Sleep sacks, also known as sleeping bags or wearable blankets, are the safest way to keep your baby warm. They eliminate the need for loose bedding in the crib, which can cover the face and lead to re-breathing. Most sleep sacks are sleeveless to prevent overheating, and they are typically made to go over your baby's pajamas for a cozy night's sleep. They allow babies the freedom they need for both arm leg movement, without restricting them in any way.

The breakdown: What you want to consider and features to look for

  • Length- Most sleep sacks offered go up to about 25 inches in length. It helps to measure your baby from shoulder to feet before shopping for one, in order to be sure that it will be long enough to be comfortable.

  • Material- Sleep sacks come in a range of fabrics and weights. Lightweight sleep sacks are preferable, especially on warm days, to prevent overheating. Muslin is a great material because it allows a baby's body temperature to regulate itself naturally; however, a plain cotton one in knit, interlock, or quilted works well also depending on the temperature.

  • Style- You can choose from sleep sacks that come with either a zipper or snaps. Some even come with a removable swaddle attached, to help comfort your baby and ease the transition from swaddling.

  • Ingredients- Sleep sacks made with polyester or conventional cotton contain artificial fibers, dyes, and chemicals that are harmful for a baby's sensitive skin and development. Be sure to choose a sleep sack made with organic cotton and natural materials, the healthiest option for your baby and the environment.

Muslin Sleeveless Sleep Sack
Sleeping safety and SIDS

Sudden Infant Death Syndrome (SIDS) is the diagnosis given for the sudden and unexplained death of an infant under one year of age. SIDS most commonly affects babies between the ages of 2 and 4 months; 90 percent of cases involve infants younger than 6 months.

SIDS is sometimes called crib death because most cases of SIDS occur when a baby sleeping, between the hours of 10pm and 10am. Cribs don't cause SIDS, but other aspects of an infant's sleeping environment have been associated with an increased risk. For example, bedding that bunches up around a baby's nose or mouth can cause dangerous re-breathing of oxygen-depleted air. Sleeping tummy-down has also been associated with SIDS.

It's important to make sure that your baby sleeps on their back, in a crib that doesn't contain blankets or unnecessary items. If your baby is in daycare, it is crucial to make sure that everyone who cares for them follows safe sleeping guidelines-according to a study published in the journal Pediatrics in 2000, 20 percent of SIDS death happens in childcare.

Click below to download top ten sleep safety tips provided by CJ Foundation for SIDS:

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