COBA Counterbalance
Glute Trainer

Interview with Jim Duffy, Inventor

I created the COBA Board after a sports injury had me searching for a safe way to strength train my legs without straining my knees,” said Jim Duffy, CEO of Pure Glutes. “After creating the COBA Board Glute Trainer, we had it tested to ensure it was not only safe, but effective at targeting the hard-to-build glutes and hamstrings. We were proven right.

Jim Duffy, Inventor and Founder

The COBA Story

COBA Board