5.5″Age recommendation is 6 months +Made in ChinaPremium materials include: 100% non-toxic silicone and FSC certified birch. Birch is 100% biodegradable and environmentally friendly.To clean, simply wash with soap and warm water. Let air dry. Dishwashing is not recommended because high heat and long exposure to water will cause the wood to deteriorate. For more information about the integrity and safety of our components, click here*Parental supervision required AT ALL TIMES when products are being enjoyed by babies, small children, or persons with special needs.