Replacement Glass Insert for Glass Sip & Straw Cup offers a solution for potential breaks or fractures in glass, which is a chemically stable, hygienic, and safe material. Our replacement parts are BPA- and PVC-free to keep baby safe while extending the life of products.
- Made from borosilicate glass
- Holds 4 oz of liquid
- Only to be used with a fully assembled Glass Sip & Straw Cup
- New insert with no measurement markings