@woollypigs The brand is Altra. They work best with Altra brand trail shoes but it's possible to hack them by adding Velcro at the back to another brand as well. @eenriquelopez did that to his Nikes(?) and it seemed to work fine.
@lehtimaeki@woollypigs what Juhani said. The velcro honestly falls, but the gaiters hold. Much better than the ones that require a strap at the bottom of the shoe; those ones never lasted long for me.
@eenriquelopez@lehtimaeki yes all the other gaiters I've seen had a strap under the foot and with me running in barefoot shoes this strap would not last more than a run or two