These handy Evenflo sealing discs fit most reusable baby bottles, and prevents baby bottles from leaking while they're being stored.
Seals baby bottles tightly so they won't leak.
Fits on any standard reusable nursers.
Easy to use, just invert the nipple in the baby bottle, place sealing disc over the nipple, and place cap ring over sealing disc and tighten. When it's feeding time just remove the disc and place the nipple in the upright position.