Tempo Flex Waterproof: Built to move

Forward momentum is core to the Tempo Flex Waterproof’s existence. Just look at its forefoot—yes, it easily resembles Kylo Ren’s almost iconic helmet. But to cut to the chase, this ridged part of the shoe (a.k.a. KEEN.Bellows Flex) gives springier toe offs minus that feeling of awkwardness at the flex point.

This exclusive tech, however, is not alone in making the Tempo Flex Waterproof such a propelling piece. Yes, boosted strides are yours in this agile KEEN hiker, thanks in part to its highly flexible collar and moderately rockered heel and toe zones.

Before you buy KEEN’s Tempo Flex Waterproof

The Tempo Flex Waterproof is by no means a tough sell. That being said, it pays to know more about it before leaping on its bandwagon. To that end, consider the following points.


  • Deep ankle pockets for extra side-to-side mobility
  • Increased stability around the heel
  • Lightweight waterproofing courtesy of KEEN.Dry (not Gore-Tex)
  • An extra pair of eyelets at the collar for a more personalized lockdown
  • A stock insole (footbed) that provides additional heel and arch support
  • Low-profile yet spiky lugs for enhanced traction both on and off the trail


  • Quite expensive for a low-top hiker (for our affordable bunch, click here)
  • Dirt-magnet flex ridges


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Paul Ronto
Paul Ronto

Over the past 20 years, Paul has climbed, hiked, and ran all over the world. He has summited peaks throughout the Americas, trekked through Africa, and tested his endurance in 24-hour trail races as well as 6 marathons. On average, he runs 30-50 miles a week in the foothills of Northern Colorado. His research is regularly cited in The New York Times, Washington Post, National Geographic, etc. On top of this, Paul is leading the running shoe lab where he cuts shoes apart and analyses every detail of the shoes that you might buy.