The Tado Muslin baby sleep sack with a 2-way zipper in X-large size is perfect for newborns aged 24-36 months. This unisex sleep sack features a colorful bear design, making it adorable and comfortable for little ones to nap or sleep. With the convenient 2-way zipper, parents can easily check on their little one while ensuring they stay snug and warm. Made from soft and breathable muslin, this sleep sack is a safe and cozy option for babies to stay comfortable during naptime or bedtime.