Small enough to sneak its way into existing 29" frames yet voluptuous enough to give the supple bounce fat tires are famous for, our plus size model splits the middle in a sneaky, 2.8 27.5" size. The Trailblazer uses a fast centerline for drag-free speed and square side blocks to hang onto off camber trail and steeps. All around winner? We think so. Available only in a TCS tubeless option to properly benefit from enhanced volume.