The Timp 4 features:

• Balanced Cushioning™ platform positions your heel and forefoot at an equal distance from the ground, encourage better alignment, better form and a low-impact landing.
• Footshape™ comfort gives your feet more space to sit naturally and is designed to address biological differences in men's and women's feet.
• ALTRA EGO™ MAXOur Altra EGO™ Max midsole foam gives you all the light and luxurious performance with a little extra bounce and added durability.
• MAXTRAC™Our grippy MaxTrac™ outsole provides the perfect combination of grip, traction, and durability on all types of terrain.
• Quick-Dry Air Mesh upper