iRock 3

Best For....

The iRock 3 is limited to the sizes we have on hand.  

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, 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 9): 8.8 oz (240 g)

Customer Reviews

Based on 24 reviews
Janine Gusztaw
Love these shoes for the mountains

Built on a men's last, they will never fit my female foot just right... But they are still amazing... They do what they do so well, it's worth the heel blister! Looking forward to the woman's...

Benjamin Bui
Super grippy, small toe box

I'm not sure why newer shoes are still opting to have narrow toe boxes with all the science coming out that wider toe boxes are healthier and more natural for feet. These shoes did the trick for climbing up the back side of half dome with the 6mm lugs, but my toes were killing me the entire way.

Hi Ben - The iRock 3 is designed to be a narrow show, built on a narrow last on purpose. There are many people who this style fits better and prefer the snug feeling.

Jessica W.
Excellent Performance

Lives up to the hype! Grips wet trails like no other, even slick trees roots and rocks. Definitely runs small, a half size up was perfect for me even with custom insoles. The only things I'm not 100% sold on is drainage. It's good, but not great. Still worth the cost, and would absolutely buy again

Michael Bernier
Great Trail Runners

Awesome shoes even though they are a bit narrow for my wider feet. They are reliable on the trail which is the important part but expect there to be an adjustment period before you break them out for a run.

Runs Small

I love the shoes! They are super comfortable to run in and they have amazing grip! The only issue is that they run extremely small. I normally wear a size 7 and had to order a size 8.5 for them to fit correctly.