ANTICOLIC AND REDUCE NOISES: MAM's innovative and exclusive Anti-Colic system, with a valve at the base of the bottle, prevents the formation of air bubbles in the liquid, helping to reduce colic EASY-ACCEPTANCE TETINA: 94% acceptance thanks to its SkinSoftTM Silicone surface with silky touch for a feeling similar to mother's skin, plus a flat, soft and flexible nipple that mimics the mother's nipple when breastfeeding SELF STERILIZATION SYSTEM AND EASY TO CLEAN: Exclusive self-sterilization system, in just 3 minutes in the microwave. Wide mouth container and all parts are easy to disassemble and clean BPA & BPS FREE MATERIALS: This MAM product is made with BPA and BPS free materials PRODUCT DEVELOPED WITH MEDICAL EXPERTS IMPORTANT: All MAM teats fit all baby bottles. MAM INSTRUCTIONS IN SPANISH AND PORTUGUESE; Product designs may vary