On their day off, Sonny Bill Williams, Rieko Ioane, Ardie Savea and several other teammates shared their rugby knowledge with some of the inmates.
Williams said the experience was about giving back to the community.
"I think for us as people, it's our responsibility to help people less fortunate than ourselves," he said.
"I got tackled before and I hurt my knee, I might not be okay to play this weekend," Williams joked.
The All Blacks players went through a skills session and took photos with the inmates.