ALL MATRIALS ARE 100% SAFETY WITH FOOD GRADE Materials Introduction: A:Bottle body:PP materials.the printing on the surface can be different cartoon or logo as your need.We can adopt silk screen printing,transfer prniting,heat transfer printing or other printing technology. B:Inner cap:PP materials.you can choose any colour in the Pantone book as your like.It is transparent or solid colour.Both OK. C:Outer cover: PP materials.you can choose any colour in the Pantone book as your like.It is transparent or solid colour.Both OK. D:Nipple:liquid silicone materials.the need hole size and shape can be made per your requirement.S,M,L size hole.round,Y,X or other shape.