Perfect for trail running, these Primus Trail Knit FG is also excellent for fastpacking and hiking. These lightweight trainers feature breathable knit upper with sock like construction, OrthoLite insole and Firm Ground outsole with textured arch for zonal grip. Completed with the Pro5 Puncture Resistant finish on the sole, these trainers are perfect for running on multiple terrains, wet to dry, concrete to rocky.