1. 奶嘴原材料均采进口食品级液态硅胶,材质安全,不含致癌物质亚硝氨,无毒无味耐高温,符合FDA和EN71标准.2. 特殊透气孔及突状物设计可解决宝宝用力吸奶时发生奶嘴扁平,凹陷等情形.让宝宝顺畅的吸乳,并避免吸入过多空气,造成腹胀或打嗝.1. Allnipplesaremadeoffoodgradeliquidsilicone,whichisheat-resistant,non-toxic,non-sticky,odorless,NitrosaminefreeandcomplieswiththeFDAof theUnitedStatesandEN71oftheEuropeanUnion.Thespecialventdesignnotonlypreventsthenipplefromcollapsingbutalsoavoidbabyfromswallowingexcessair,whichmaycausecolicandhiccoughduringfeeding.