The SNOO mattress is uniquely shaped and specially designed. We recommend only using Happiest Baby’s fitted sheet with SNOO. Any loose or excess fabric inside the bed (such as bunching from using a larger mattress sheet) is a safety concern for your baby.
Disclaimer: The information on our site is NOT medical advice for any specific person or condition. It is only meant as general information. If you have any medical questions and concerns about your child or yourself, please contact your health provider.