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The Altra Flow 3 and Flow ST deliver Altra’s signature comfort with a smooth, responsive ride built for everyday miles. Both models feature a balanced, zero-drop platform and plush cushioning for natural footstrike and all-day comfort. The Flow 3 is designed for neutral runners seeking a versatile, cushioned trainer with lively energy return, while the Flow ST adds targeted stability for runners who need extra support without sacrificing responsiveness. Whether you’re logging daily runs, long easy days, or mixed-pace workouts, these trainers bring comfort, versatility, and confidence to every step.