iRock 3

Size Guide

Grip and then some...

The iRock 3 is made for technical trails and obstacle course racing. It has the grip and control you need for the gnarliest of terrain.  

Our most aggressive, deep lugs give you the best grip in the worst conditions. This lower profile shoe gives you exceptional feel for the terrain. The upper is made of breathable sandwich mesh reinforced with strong kevlar fibers. It is built on a narrow last for a snug fit.  

The iRock 3 is superb for obstacle course racing, Swim Run (or Swim/run), Sky Running, VK’s, and trail running. 



  • Built on a narrow last 
  • Cushioning units in front and heel.
  • FitLock for mid sole stability 
  • Outsole is 100% Butyl-rubber. 
  • Strengthened rubber toe-cap
  • 7 mm lugs in outsole
  • 27mm/21mm stack height - total with lugs
  • 6 mm drop 
  • Weight (US 8.47): 8.8 oz (240 g)


*Please note, orders shipping to locations outside of the United States may take extra business days to process and are subject to local VAT and/or customs fees upon delivery. VJ Shoes USA is not responsible for any fees charged by the destination country's government body, brokers, or other third parties.

Customer Reviews

Based on 18 reviews

I have the MAXx and thought I'd give these a try. I was a bit concerned from all I had read about them being a bit narrow. I went up a half size (as I did with the MAXx) and I cannot tell you how comfortable these shoes are... In fact as I was walking out of the Vegas Sprint last weekend I had that exact thought! Unbelievably comfortable, killer grip (duh) and they just performed perfectly. Highly recommend!

Holy grip

For starters, these are incredibly comfortable. The lower profile makes them feel like they are part of my feet. But the best part? The grip is INSANE. I live in central New York and am able to hit snowy trails with such ease. Even the crunchy, icy patches are no match for these. They make me wish the trails were snowy all year.

Fantastic OCR shoes

I ran an extremely muddy Spartan course, and the iRocks were phenomenal. The grip was reliable, the lugs helped propel me through the bogs and they helped me onto the podium.

The best shoes ever

Best ocr shoes ever.

Finally a narrow shoe for men

This is a great shoe for the trails, best treads ever. This model also fits feet that are narrow. It is not grossly over engineered like the big boy brands, Nike, NewBalance, Brooks, etc.(way too much support on those brands). My only suggestion is on the next model round the toe out it’s too pointed, and add a bit more cushioning.