The silicone is a soft, flexible material with no sharp edges, perfect for safe play. They are made of food-safe silicone, perfect for teething little ones. What's to love: - Silicone is safe, sustainable and made from an abundant natural resource - Non-toxic - Highly durable in hot and cold temperatures - Lightweight, flexible for portability - Hygienic, easy to clean, and waterproof - Soft and subtle colors - 7×7″ - Nine food-grade silicone shapes in suble colors - Branded bag for storage