Instruct: Classify the given Amazon review into its appropriate rating category
Query: Very easy to use.

I bought the weights and the fermentation airlock lids for the widemouth jars. This was a very good purchase. So far I've made over a gallon of refrigerator pickles using these and they're yummy! I love that it doesn't require that I remember to daily "burp" my lids, but it allows the gasses to escape. Nothing gets in, either.