The Faniks Baby Sleeper is safe when used as directed. Please read and follow the warning instruction that comes with the sleeper. Also read the Infant Sleep basics information and other educational instruction on our website. When we decided to share our sleeper with mothers, safety was our number one priority. We know that our sleeper is comfortable. We believe it may keep babies sleeping on their back, prolong their sleep duration and reduce their risk of spitting up. But more importantly, an infant mattress must be safe. To answer this safety question, before our first sale, we donated the first fifty mattresses to new mothers and we didn’t get any complaints about any adverse events from these mothers. Also, a pediatrician designed our sleeper, so safety in the design was as important for us as comfort. Our initial product had baby restraints. We removed this because we felt that a restraint may cause a baby to be trapped in uncomfortable position therefore increasing the baby’s risk of strangulation or other adverse events. This has happened in the past with some infant sleep products with restraint that were recalled. Healthy babies have the innate capacity to move when uncomfortable; a restraint, we believe, will limit a baby’s movement when uncomfortable. We also looked at different fabrics before deciding on the current cover fabric that we use based on its safety features. It has a TPU laminate that acts as a barrier to dust mite and thus makes it hypoallergenic, it is also free of lead, phthalates, fire retardant and other chemicals that could be harmful to your baby. This sleeper complies with the CPSC as well as the American Society for Testing and Materials (ASTM) (F3118-15) standard safety specification for infant inclined sleep products. Our foam manufacturer is certified by CentiPUR-US certification for flexible polyurethane foam products. The mattress is made of high-density materials, and is free of lead, phthalates, fire retardant and other chemicals that could be harmful to your baby.