For most of the season, Myles Jack wore the Nike Vapor Jet 5.0 gloves. He only wore them in an all-white colorway.
The Nike Vapor Jet 5.0 released in 2018 and are a great pair of gloves. They fit super tight (especially around the thumb), and have a super sticky, Nike magnigrip palm. These are a great option for skill position players or even a speedy linebacker like Jack.
You can purchase the Vapor Jet 5.0 at DicksSportingGoods.com for $45 in many colorways.