Your favorite neutral do-it-all shoe returns, this time with notable and exciting upgrades designed to improve your running experience. This mid-cushioned favorite now provides even more protection and support. A decoupled heel promotes a soft landing while extra rubber wraps up to protect your toes. A modernized upper with engineered mesh makes for a more comfortable and secure fit. AND an updated midsole design keeps these Altra classics looking fresh and fast. Never break stride in the updated instinct 4.0.