This ceramic bottle never leaves a metal taste and leaves your water tasting pure. The cork lid with a rubber stopper ensure for a leakproof seall. Wide mouth opening is designed for easy cleaning. Sized to fit most standard size cup holders. Food and Lead Safety tested plus it's PVC, BPA, latex and phthalate-free and holds 17 ounces. Hand wash recommended. With every BUILT reusable tumbler purchased will save you money and reduce plastic waste.