In August 2017, Dennis Smith Jr. finally signed an endorsement deal with a major brand, choosing Under Armour, for a rumored $2M per year. The dynamic guard joined Josh Jackson and the Curry brothers as an exciting new face for the growing shoe brand. He was seen in the Drive 4 for much of his rookie season and has been spotted in the Under Armour HOVR Havoc Low in the 2018 Las Vegas Summer League.
Drafted 9th overall in 2017 out of NC State, Smith wore adidas Dame 3 shoes as part of the 2017 March Madness tournament. During his highly hyped Summer League performance with the Mavs, Smith impressed with a cool blue pair of Jordan Super.Fly 5 shoes.