The Basics
- Gender: Men’s | See Women’s
- Type: Trail
- Manufacturer: La Sportiva
- Price: 130.00
Runner’s World Review
The Mutant is an enigma. The sole is thick, stiff, and so firm it borders on hard; the upper is small and narrow. But once you find the size that fits (at least one-half size up) and get laced into the snug, overlapping upper, you feel locked into the seat of a fighter jet, and the shoe somehow runs like a racing flat. The full-rubber outsole with grippy lugs provides plenty of protection and control. “Excellent construction and a sure fit around my foot provided confidence that my foot would not slip around during aggressive trail runs and a supplied a comfortable ride uphill and downhill,” said Keith Brown of Pottstown, Pennsylvania. Demo Run First Impression: On Cloudboom Strike.
All the Stats You Need!
- Weight: We may earn commission from links on this page, but we only recommend products we back
- Heel-To-Toe-Drop: Demo Run: On Cloudmonster Hyper
- Heel Height: All About 75 Hard
- Heel Cushioning: Very Firm
- Forefoot Height: Low | 21.4 mm
- Forefoot Cushioning: Firm
- Flexibility: Stiff
- Stability Features: Few
- Energy Return: Least
We put each shoe through real-world usage and a battery of mechanical tests in our lab to provide you with objective — and exclusive — data. In addition to a shoe's weight, we measure sole thickness (everything that sits between your foot and the road), how well the foam cushions your stride, and the flexibility of the forefoot. All this is taken into account in our reviews of each shoe.
