Drop: 0 mm
Stack Height: 25 mm
Your favorite do-it-all shoe returns this time with new and exciting upgrades designed to improve your running experience. Returning to the last of our best selling 1.5, this former, more responsive sole gives you that extra pep in your step. A modernized upper with engineered mesh makes for a comfortable and secure fit. And an updated midsole design keeps this Altra classic looking fresh and fast. Never break stride in the updated Instinct 4.0™.