SteveM I've bought many different sizes from varied vendors on Amazon of these organza bags. They are all very similar, however when choosing a size, it's important to remember that the size given is when laying flat.
If you're looking to cover a tomato cluster, you'll probably need a larger size( 8 x12' ~ 20 cents each). I've found they don't seem to decompose in one year, but just started buying them 2 years ago. Here's one order I made. https://www.amazon.com/dp/B096Y6ZXJ5?ref_=ppx_hzod_title_dt_b_fed_asin_title_0_0&th=1
The only issue I found was with a group of ivory colored ones, where the casing holding the ribbon started to come apart at the seam. https://www.amazon.com/dp/B092LTLPFC?ref_=ppx_hzsearch_conn_dt_b_fed_asin_title_5&th=1
The cost adds up fast, but I've decided that with these bags, bigger was usually better for ease of covering and removing. I've successfully washed them in the washing machine. Last year, to protect my dahlia buds/pods from the "seed worms", almost all buds got covered early in their development. I have LOTS of bags, but find I use them up quickly. After the flower has set a seed pod, I can replace the larger bag with a much smaller bag which adequately protects the seed pod.
