The Flyroc 310 is one of Inov-8s first trail shoes. It has recently gone through some changes that improved on an already good design. The 310 is light enough for racing but also offers enough cushioning to make it your everyday trainer. The upper webbing support provides a secure foot hold and the meta-flex grove in the sole allows the fore foot to flex naturally. Both of these design features make the shoe very nimble on technical terrain. The mid sole is fairly stiff and offers good protection from rocks and roots.
The Flyroc is wider than the Roclite models and has a very generous toe box. This makes the Flyroc and excellent go-to shoe late in a 100 mile race when your feet are swollen and you're looking for some relief for your tired, aching dogs. Another noticeable difference is the height of the heel. In the Flyroc, your heel sits very low in the shoe. This gives you an excellent feel for the trail and allows you to pick your way though a mine field of rocks and rocks more surely than with other trail shoes.
Unfortunately the low heel was my undoing. I suffer with plantar fasciitis and I think the lower heel must place addition strain on the plantar fascia. After wearing the shoe for the first time in a 10 mile race I had a moderate flare-up in symptoms after being nearly symptom free for 3 - 4 months. Although I don't recommend this shoe for sufferers of PF, I feel this is a very good trainer/racer on hard-pack and technical trails.