REI's Top-Selling Running Socks With the 'Perfect Balance of Cushion and Arch Support' Are Just $15 Right Now

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Although REI's 4th of July sale has this summer's best savings on camping gear, Yeti coolers, and hiking equipment, it's also filled with deals on running essentials. Right now, you can pick up some new running shorts for just $42 or a fresh pair of On running shoes for under $125. But if you really want to move comfortably, there's one pair of running socks that's a must-try, and they're only $15.