Whether youre out on a run, trying out a new trail, hitting the gym, or toeing a slackline, youll love the Prios combination of freedom and protection. The Prio uses the same 5.5mm FeelTrue rubber as Xeros Z-Trek sandal, so you get great protection while still getting the ground feedback that your feet love. The optional 2mm insole lets you have more or less of a barefoot feel depending on your mood. Xeros Huarache sandal-inspired reflective heel and instep straps hold your foot securely with or without socks while keeping your toes free to move. Plus, the Prio is made from 100% vegan-friendly materials.