Watch Robert Downey Jr. Give This 7-Year-Old Boy A Bionic ‘Iron Man’ Arm

You may want to grab a tissue for this one.

Robert Downey Jr. teamed up with Limbitless, a company that manufactures 3D-printed prostheses, to give one 7-year-old boy a gift he’ll never forget.

Alex is your typical 7-year-old kid. He’s energetic and fun. He likes superheroes.

However, Alex’s right arm is partially developed.

So Limbitless Solutions, a project of the University of Central Florida and run by Albert Manero, used 3D printing to create Alex an Iron Man arm. 3D printing technology makes the process of making electronic prosthetics for children cheap. One arm for Alex would typically cost $10,000. His new Iron Man bionic arm costs a mere $300.

The arm was purchased and it wasn’t long before Iron Man himself was fist-bumping Alex.

You can donate directly to Limbitless.

Check out the heartwarming video of Downey Jr., excuse me, Iron Man, and his new sidekick Alex in the video above.