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Lands' End Men's Waterproof Packable Rain Jacket$104.96
With this jacket, keeping dry in the rain couldn't be easier. The lightweight fabric is seam-sealed to be 100% waterproof and the cuffs, hem and hood are adjustable to keep water out. And thanks to a clever 2.5 layer design, it's breathable too.
Not only that, but the whole thing packs down into its own pocket making it easy to keep handy.