I've used them nearly daily for 2 weeks. They do not prevent static cling and therefore will not be useable in the winter in our climate. It's back to dryer sheets for us. Will try again in summer. They do not dry clothes faster (as claimed in other reviews), but they seem to hold together well, in shape and no apparent shedding.
I haven't tried the product as of yet, but I have no doubts it's a good quality product.
I love the fact that I no longer have to rely on chemically enhanced dryer sheets.