DeForest Buckner wears Douglas Shoulder Pads. He’s been wearing since his days in San Francisco and is actually wearing the exact same pads. If you look really really closely, you can see the red/gold padding of the shoulder pads under his jersey.
Douglas Shoulder Pads are a very popular choice in the NFL. They’re lightweight and low-profile but most importantly, offer lots of range of motion. Being a defensive lineman, it’s vital that Buckner is able to get to the QB. These pads allow him to attack offensive lineman with all his insane pass-rush moves.