the new nylon-blend Speedboard® produces an energetic and responsive ride

This women's running shoe features our innovative GuideRails(TM) support system that keeps you comfortably in your stride while tuned nitrogen in the midsole provides plush landings and responsive toe-offs

coupled with Energy Blade for propulsion

5" heel height

Women's Birkenstock Florida Flex Platform Birkibuc Size:40 the new nylon-blend Speedboard® producesStyle and support on another level. The Florida sandal is updated in our signature Birkibuc material and given a lift from a flexible platform sole. Designed on a contoured footbed so supportive, you'll want to reach for a higher heel.