New MTB 29x 1.75-2.5" inner tube for all 622mm (29") rimmed bike using tyres between 1.75" and 2.5" width.
The Tour28 Wide is the same tube. Some boxes are MTB29 other are Tour28 Wide. Since they are the same tube (Tour 28 wide is sold on the Continent to commutors). MTB29 is sold to mountain bikers.