... ; it's unbrekabe and easy to hold. Medical grade silicone rubber, heat-resistant to 200°CNipple:Well designed according to ... breasts, soft and natural. Medical grade silicone rubble, heat-resistant to 200°CStraw: Match with aoto ... Polypropylene, heat-resistant to 120°CBottle sleeve:Protect the soft silicone bottle,heat-resistant to 120°CTwist Cap:Polypropylene, heat-resistant ...