Bormioli Rocco Fido 2 Pack 33.75 oz Food Storage Glass Jars with Airtight Rubber Seal and Stainless Wire Clamp Review (2026)

Who these smaller Fido jars are for

This 33.75 oz two-pack fits a fermenter making smaller batches, such as a few cups of shredded cabbage, a single cucumber's worth of pickles, or overflow starter and brine storage alongside a larger primary jar. Two jars at this size let someone run two different ferments side by side, like kraut in one and kimchi in the other, without committing shelf space to two full-size jars. It also works well for someone new to vegetable fermentation who wants to test a recipe at a smaller scale before scaling up to a bigger Fido jar. Anyone planning to ferment a whole head of cabbage or a large batch of vegetables in one vessel will find 33.75 oz too small and should look at one of the larger sizes in the same Fido line instead.

The airtight seal and build in detail

Bormioli Rocco is an Italian glassware maker, and every Fido jar in this line is manufactured in Italy with the same airtight system: a rubber gasket seated under the lid paired with a stainless steel wire clamp that presses the lid down evenly around the rim. That combination is what makes Fido jars a common choice for vegetable ferments like sauerkraut or kimchi, since the gasket lets built-up carbon dioxide vent past the seal under pressure during active fermentation while still blocking oxygen from reaching the ferment the rest of the time. The wire clamp is stainless steel rather than plated metal, which matters for anyone fermenting in brine, since splashed salt water is what corrodes cheaper clamps over repeated use. The glass body is dishwasher safe, but Bormioli Rocco and most retailers recommend hand washing the rubber gasket and clamp assembly separately to keep the seal in good condition for longer.

Living with these jars through a ferment

In daily use, the wide mouth on this jar size makes packing shredded vegetables and pouring brine straightforward compared with a narrow-neck jar, and the clear glass lets a fermenter watch bubbling and brine level without opening the lid. Because the jars are smaller, they fit standard fridge shelves easily once a ferment is finished and moved to cold storage, unlike some of the larger Fido sizes that need extra vertical clearance. The rubber gasket should be checked periodically for cracking or stretching, since it is the part that wears out first with repeated use, and Bormioli Rocco sells replacement gaskets separately for exactly this reason. Vegetables need to stay submerged under brine during active fermentation, and this jar does not include a weight for that purpose, so a small glass weight or a clean cabbage leaf tucked under the surface is needed to keep everything under the brine line.

How this size compares with the rest of the Fido line

Within Bormioli Rocco's own Fido lineup, this 33.75 oz two-pack sits at the small end, next to the 50.75 oz, 67.75 oz and 101.5 oz single jars that use the same gasket-and-clamp seal but scale up in capacity for bigger batches. Compared with Le Parfait's 2L Super Jar three-pack, which uses a similar rubber gasket and wire bail design, the Fido jars have a squared-off profile in the larger sizes while this smaller size keeps the traditional rounded shape. Getting two jars in one purchase is a practical edge over buying single larger jars individually, since it allows running two separate ferments at once, though the total combined capacity of both jars together is still less than one of the larger single Fido sizes.

Verdict and who should size up instead

This two-pack suits someone fermenting in smaller quantities, running two ferments side by side, or looking for extra jars to store starter, brine, or finished pickles in the fridge. The seal quality and Italian build are consistent with the rest of the Fido line, so there is no compromise on airtightness for choosing the smaller size. Anyone planning to ferment a full head of cabbage, a large batch of kimchi, or several pounds of vegetables in one container should choose the 67.75 oz or 101.5 oz Fido jar instead, since 33.75 oz will fill up quickly with a big batch. A fermenting weight should be bought separately either way, since none of the sizes in this line include one.

Frequently asked questions