Description The only thing more comfortable: the womb. Down-like fill wrapped in silky-soft bamboo rayon keeps your little one safe and secure, while our one-of-a-kind WONDERZiP® closure protects them, even during diaper changes. So get ready to sleep a lot. Like, a lot, a lot. Why you'll love it So fluffy and magical you'll want one for yourself. Perfectly weighted to mimic and insulate like the most comfortable down comforter. Little one stays covered and cuddled during easy, easy diaper changes Scientific research shows that sleeping with evenly distributed weight, from shoulders to feet, soothes babies and allows them to enter a deeper sleep cycle. Being gently wrapped in a comforting weight increases serotonin and relaxation, and naturally reduces anxiety by providing the same overall feeling as a giant hug. Wider, longer cut to comfortably bend and kick those legs Shoulder snaps are a blessing for sleepy baby transfers + even easier entry and exit TOG Choose 1.0 TOG if the room temperature is 70°F to 75°F choose 2.6 TOG if the room temperature is 58°F to 70°F