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Ships within 48 hours · Estimated delivery Jul 27 - Aug 1
Experience the classic Altra feel with zero drop and our roomiest toe box
backstroke
4 GHz ANT wireless communications protocol
High-flow valve: The intuitive high-flow valve makes drinking easier
Eco-friendly: By preparing your gels in advance
Garmin Forerunner 970 Multisport GPS Watch Colour:French Grey/Indigo Experience the classic Altra feelRUNNING ECONOMY Measure your overall energy efficiency while running using long term running volume, stride length and step speed loss, which tells you how much you slow down when your foot hits the ground when you pair your watch with the HRM 600 monitor (sold separately). RUNNING TOLERANCE Better understand the impact each run has on your body, and get a recommended weekly maximum mileage so you can keep training effectively without taking on too