Mainstays 32 oz Mason Jars, Wide Mouth Quart Canning Jars with Lids and Rings, 12-Pack Large Glass Jars for Home Canning and Fermenting

10/100

Low plastic. Mainstays 32 oz Mason Jars, Wide Mouth Quart Canning Jars with Lids and Rings, 12-Pack Large Glass Jars for Home Canning and Fermenting has an estimated plastic score of 10/100 based on material signals in public product text, not a complete composition.

Plastic score

Signals

No complete composition was listed, so this score is an estimate from these product-text signals:

glass

How this was scored

No complete material composition was found, so the score is estimated from material keywords in the product text — the same fallback the Plastfri extension uses, tuned to under-flag rather than over-flag. Confidence: medium.

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