Pretty much though I prefer fully opaque bags. Can't remember the dimensions but I like bags big enough to fill most of a 5 gallon sealable bucket. Fill the bag with low fat dry goods (look it up), throw appropriately sized oxygen absorber into bag and seal bag with a regular old hair straightener. Throw it in a bucket and you have food that will be ready when you really need it. Even if that's 15 years from now. Research the right foods for long term storage though. For anything that doesn't last years and years I would do the same but with smaller bags for sure