BPA free. Insulated. Unique rim design teaches child to drink from a regular cup. 100% spill-proof, leak-proof, break-proof. Guaranteed. Seal Zone technology. Trusted seal. Always. Insulated to keep drinks cool longer. Bite resistant rim. Promotes safe, independent drinking. Unique flow control valve, easy for child to drink. Dishwasher-safe. Assembled in USA with parts made in USA and China.