The VJ IRock+ is designed for technical trail running and orienteering, where a secure grip and precise foot control are essential. The Superior Contact outsole uses butyl rubber with deep 5.5 mm lugs for traction on wet, loose, and uneven surfaces. The Fitlock system wraps around the midfoot for stability, while the reinforced nylon mesh provides protection without making the shoe unnecessarily heavy. The Plus model has a wider last than the original IRock and offers more room in the forefoot.