304L (18/8) Antibacterial Stainless Steel, non-toxic, corrosion resistant, antibacterial. Lab results show 99% resistant to Staphylococcus aureus and Escherichia coli. High rim is designed to prevent child’s mouth to come in contact with plastic outer sleeve. Specially designed triangle rim to prevent bowl from tipping over and to provide grip.Reverse curve on the inside rim for easy scooping. Fork-Rounded edges for safety.Spoon-Bite-size for children. Removable Non-toxic PP Outer Sleeve,PP outer sleeve layer is a safety feature that protects babies from high heat. The Stainless steel can be heated directly, when PP outer sleeve is removed. Removable food grade silicone sleeve,specially designed oversized handles are easier to grip. Food Grade Silicone Lid,keep food safe and fresh.