Infant sleeping bags are the modern way to ensure crib safety ÃÂ they replace loose bedding in the crib that can cover your baby's face and interfere with breathing. In addition to helping your baby sleep more safely they help to promote better sleep. Wearable blankets are a warm and cuddly blanket baby can't kick off, ensuring a safe and sound sleep for naptime or bedtime. Choose generous sack designs that deter climbing out of the crib and help to keep legs from going through crib rails. Sleep and nap sacks are available in a wide range of fabrics including cozy cotton fleece for cooler weather. Breathable muslin fleece is ideally suited for warmer weather and offers a comfortable, peaceful night's sleep or nap for baby and you.