KEEN Women's Tempo Flex WP Mid Hiking Boot Steel Grey/African Violet Hit the trails with KEEN�s Tempo Flex. Enjoy waterproof protection from the KEEN.Dry breathable membrane, PFC-free water repellency and ripstop mesh uppers equipped with durable TPU overlays. KEEN�s Bellows Flex in the upper bends easily to reduce wear and tear. The Tempo Flex�s outsoles feature 4-millimeter multidirectional lugs to keep you surefooted on wet ground. KEEN Women's Tempo Flex WP Mid Hiking Boot Steel Grey/African Violet