The quality of your babys sleep is fundamental to her and to your familys well being. Baby deedee contributes to better sleep by keeping babies and toddlers warm and comforted in the crib, without any baby blanket being kicked off. The sleep nest lite is a lightweight baby sleeping bag (also called slumber sack or baby sleep sack). It is intended to be worn over your babys regular sleepwear and replaces traditional blankets. Its double layered jersey cotton makes it perfect for warmer climates.