B.Box Sippy Cup Replacement O-Rings
Package of two spare silicone o-rings.
To insert o-ring:
1. Hold o-ring with one finger in the rim of the lid to keep it in place.
2. Use another finger to run alongside the o-ring around the rim. Be careful not to push too hard with sharp objects, such as nails, as they may tear the o-ring.
3. Repeat step 2 twice to ensure o-ring is tightly in place.
4. Screw in your base and your cup is leak proof and ready to use.
Made from silicone.
BPA, Phthalates and PVC free.