Features:

• ALTRA EGO™ MAX.  The Altra EGO™ Max midsole foam gives you all the light and luxurious performance with a little extra bounce and added durability.
• NATURAL FIT.  Altra shoes have a roomy toe box and zero to low drop, built to keep you comfortable and keep you running. Move the way you were designed to. ROCKER SHAPE. 
• Altra's rocker shape is designed to give the feeling of being propelled forward with each step and provides an efficient toe-off without taking away from your natural stride.

Specs:

• Weight: 11.4 oz / 323 g
• Outsole: Rubber
• Cushion: High
• Stack Height: 33 mm
• Drop: 0 mm
• Upper: Engineered mesh