The summer is almost over. What should I wear when I'm at the seashore, after a warm day with a chill in the air?

Just something I can take with me in a backpack and throw over my t-shirt or bikini.

Option 1
Option 1
Option 2
Option 2
Option 3
Option 3
Option 4
Option 4
Option 5
Option 5

I know, some will say a sweater without sleeves isn't really a sweater. LOL

The summer is almost over. What should I wear when I'm at the seashore, after a warm day with a chill in the air?
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