Receiving his first offer from the Warriors in the spring, Riggins committed to Hawaii this week.
"They were my first offer, and they were always there for me, and have always been recruiting me and Hawaii is the best place for me," said Riggins.
"Coach (Daronte) Jones saw my film in the spring and offered me and then Coach (Norm) Chow started recruiting me and they've been really good recruiting me," said Riggins.
Riggins can play a variety of positions, and the Warrior coaches want to get the ball in his hands in numerous ways.
"They're bringing me in as an athlete, but they said exactly that they want to get the ball in my hands and use me on a bunch of different plays," said Riggins. "I'll get running back reps, but they want to use me in the slot and to return kicks and punts too."
Riggins plans to visit officially in October.
"We have a bye in three weeks and Hawaii has a bye that same weekend, so I'm going to visit officially that weekend," said Riggins.
The three-star was relieved to have his decision made.
"It's nice to just be done and be able to play my games without having to worry about recruiting or getting my film out," said Riggins.