The Rogue Fly is Montrail's lightest and most minimal trail shoe designed for those who see the "more" in "less." Simple, all mesh upper construction creates a minimal, lightweight fit and feel on the foot with unparalleled breathability and "seamless" nature. Low profile midsole for flexibility and a fast responsive feel on the trail. A micro 3-point lug design for extreme lightweight multi-directional traction, combined with full-length Gryptonite. Combined external TPU shank and Trail Shield for support and traction. Horizontal and vertical flex grooves provide forefoot flexibility. The perforated outsole reduces weight.