Tua Tagovailoa wears a Sportstar Victory T-Rex Hurricane. These chinstraps are incredibly common throughout the NFL because of their safety and comfort. They are made with medical grade foam and are actually proven to be the safest chinstraps available. They also look great and are very customizable.
You can completely customize your own Sportstar chinstrap on DicksSportingGoods.com for $30 or get the exact one Tua wears (Victory Hurricane) at Sportstargear.com for $35.