Men's Endorphin Azura PHG's which some runners found to

which some runners found to be a bit too soft for faster-paced runs

Made with recycled materials equivalent to 12 plastic water bottles

While it retains ALTRA’s signature wide toe box

the GTS 21 offers a slightly softer and more responsive ride

Men's Endorphin Azura PHG's which some runners found toDescription: With its bold design aesthetic, the Endorphin Azura introduces a non plated super foam experience to our Fast & Light category. Designed as a high performance daily trainer, the Endorphin Azura offers the perfect combination of a soft, bouncy ride for your daily miles, while delivering a responsive snap from the full PWRRUN PB midsole and SpeedRoll technology for when you pick up the pace. Features & Benefits SUPER FOAM: Relish the soft