aden+anais Swaddles are made from Muslin, a finely-woven and breathable fabric. The open weave enables airflow, reducing the risk of overheating keeping your loved one happy and safe. Muslin is strong, endures limitless washes, and gets even better with age. aden+anais Muslin Swaddles are pre-washed so they are super soft from the start and stay that way wash after wash. This product requires special care instructions, so be sure to follow them carefully. Size - 47" x 47" muslin swaddles Sorry, personalization is not available on these products.