Under his jersey and shoulder pads, George Kittle wears a Nike Hyperstrong padded undershirt. Kittle is one of the most talented blocking TEs in the league but this means he’s often in the trenches. He wears the padded undershirt to help protect him while blocking and also for when he takes big hits making catches over the middle. Just an added layer of protection for one of the league’s most physical players. The Nike Hyperstrong products offer plenty of protection and are also pretty lightweight.
I can’t seem to find this exact Nike Hyperstrong padded undershirt but I have found some similar ones at Dicks.
Photos via 49ers.com.