Get ready to sleep a lot when your baby is soothed in the gÌ_namÌ_naå¨ SWADDLE sleep bag. This down alternative sack with evenly distributed weight increases relaxation, arms in or out, while the special WONDERZiPå¨ keeps baby swaddled & cozy for diaper changes A BETTER WAY TO SLEEP: Research shows that sleeping under an evenly distributed weight brings about a deeper sleep cycle, increases serotonin, and reduces anxiety by giving the same all-over sensation as a full-on, calming cuddle EASIER: The one-of-a-kind WONDERZiPå¨ diaper-zipper keeps baby swaddled covered cozy during the easiest diaper changes YOUR CHOICE: Arms in or out. Safe transition for babies who roll FEEL THE DIFFERENCE: Magically fluffy perfectly weighted in ultra-soft bamboo rayon mimics your soothing hug all night DOWN ALTERNATIVE: A luxurious microfiber fill that mimics the warmth and loft of a down comforter MOST COMFY FIT: Wider bottom to comfortably kick and fold legs in the natural frog position