I kept buying these $5 umbrellas from vendors on the street, and they kept falling apart after one or two storms. I recently ponied up for one of these Marimekko mini umbrellas, which I really like. It has a fun poppy pattern, and it folds up super tiny–about six inches long. It’s so small that I can keep it in my bag all the time. Plus, it comes with a really nice carrying sleeve.
On sale for $24.00, eBags