If you have been waiting to try Altra’s latest update on their very popular Superior line you won’t be disapointed. The Superior 4 is a lighter and sleeker trail crusher. You will notice much improved grip with its MaxTrac™ rubber outsole and better security with the plush, yet resilient, Altra Quantic™ midsole. The updated lug pattern and rounded heel style blows away the competition with very fast, light trail shoe.