A "travel umbrella" is a small and portable umbrella that people can easily carry with them when they are traveling. It is designed to protect them from rain or sunlight while they are on the go. Full definition
And a great travel umbrella stroller can go anywhere you go! (geekwrapped.com)
You could need a light jacket, heavy coat, or maybe a small travel umbrella. (insubuy.com)
As for the rainy days, I thought it was a good time to invest in a decent travel umbrella and when I saw this floral print one, I had to have it! (zoewithlove.me)