Features:

• FOOTSHAPE™ . Altra's signature FootShape™ comfort gives your feet more space to sit naturally and is designed to address biological differences in men's and women's feet.  
• BALANCED CUSHIONING™ Our Balanced Cushioning™ platform positions your heel and forefoot at an equal distance from the ground, encouraging better alignment and form.
•  MAX Our Altra EGO™. Max midsole foam gives you all the light and luxurious performance with a little extra bounce and added durability.
• VIBRAM® LiteBase.  According to Vibram®, Vibram® Litebase outsole reduces 30% of the overall sole weight through a reduction of the sole thickness by 50%, while maintaining Vibram quality in grip, traction, and durability.
• BOA® FIT SYSTEM. The PerformFit™ Wrap from the BOA® Fit System is designed to improve directional efficiency and reduce landing impact, while providing a micro-adjustable, precision fit you can change in a matter of seconds.

Specs:

• Weight: 9.3 oz / 264 g
• Midsole: Altra EGO™ MAX
• Outsole: Vibram® Litebase
• Cushion: High
• Stack Height: 30 mm
• Drop: 0mm
• Upper: Ultra-lightweight, hyper-breathable