I use this shoe for shorter runs (under 5 miles) and longer runs on packed trail. Weighing in at 5.7 0z for women and 7.1 oz for men, I wouldn’t recommend this shoe for long training runs unless you are an experienced minimalist runner. However, because of its lightness, it makes for a great racer or cross trainer. The flexible upper is another greater feature of the shoe, especially if you have a wider foot. The cushioning is firm but comfortable. Overall, the shoe is lightweight, flexible, and surprisingly durable compared to other shoes in its class. Fits true to size.