Natural Breast Enhancement Forums

The internal diameter of the tubing is 4mm. Smaller than Noogleberry’s, I think. Where are these breast pump sellers getting their airlocks? They must be available in different diameters.

It seems like an “aquarium check valve” is what I’m looking for. Bosom Beauty seems to use standard size aquarium tubing, unlike the Noogleberry tubing, which is bigger. It should work, but I’d prefer to find one with a release button.