1,Material:silicone 2,Apply to:wine bottle 3,Offer custome design 4,Pass:FDA 5,Welcome OEM ... OEMOffer custom silicone rubber bottle stopper 1.Material:100% food grade silicone 2.Size:17x13x20mm3.Used for bottle lid, and bottle cap, glass bottle, wine bottle,water bottle ... color are available6. Packing: 500pcs per poly bag7. OEM service, custom design welcome, samples are available.