Birth Sack Birth Sack for Baby in Quilted Diamond Knit in White with Bear Face applied manually on White Fabric. Ideal for sleeping in the Crib, Bassinet, or placing in the Group 0 Seat because it has openings at the back to pass the straps through. * For newborns up to 6 months * Very warm, the baby is now in good conditions to discover the world by your side! * Exterior 100% Quilted Cotton * Bottom closure for easy diaper changing * Size: 45x80 * Openings to place in the Stroller. For all these reasons and from my experience with two children, I am a fan of Birth Sacks. Although there are various names on the market, from Angel Nest (direct translation from French): Sleeping Bag with Hood. Ideal for your Baby to sleep peacefully, comfortably, and safely in a Crib or Next-to-me. If you have any questions, contact us HERE. It will be a pleasure to talk to you! Make our brand's online store your favorite for baby clothes!