Sun umbrella for hiking (near Feasterville)

This is a very specific ask: I'm looking for a lightweight (less than 8 oz) sun umbrella to be used for backpacking, with UPF reflective material . Preferably a manual open, rather than auto open. I've looked everywhere to buy one, and not finding one within my price range with decent reviews. If anyone has one that they no longer need, I would put it to good use. Thanks for reading and considering!