What do hot dogs, swimming pools, and American flag sweaters have in common? Well they’re all synonymous with the Fourth of July, of course. And as always, we’re thinking about sales. This midsummer holiday, you’ll find some deeply discounted finds on not only mattresses, but also swimsuits, outdoor gear, and workout clothing. So in between taking a dip in the ocean, reapplying sunscreen (hint, hint), and backyard barbecuing, why not peruse the web and snag some great finds? Summer-mode, activated.