Is the SleepSack Wearable Blanket chemically treated with flame retardant chemicals? December 18, 2024 20:18 Updated No! The fabric and fibers used to make our garments are not chemically treated in any way. Related articles What is a TOG Value? Does the SleepSack Wearable Blanket meet the Consumer Products Safety Commission (CPSC) guidelines for fabric flammability? Why is the zipper upside down? How do I transition my baby from Swaddling to a SleepSack Wearable Blanket? How do I store BassiNest in between usage?