Glass beads are the industry standard filling for Weighted Blankets used in therapeutic and medical settings. Safety and quality are our top priorities, and these blankets feature a unique double layer at the center to ensure the glass beads are securely encapsulated and not able to leak between seams. The glass beads are made of non-toxic, hypoallergenic, and durable glass material. They're designed to withstand even vigorous use and machine washing without breaking or leaking.