Artifact Bag Co. Campus Tote

May I know what leather is used for the handles? Thank you.

Keep in mind that I haven't tested the bag to its extremes, but it's really sturdily made. I can easily see it handling much heavier loads than what I carry everyday, which is a Surface Pro; document folder; headphones; water bottle; two smaller pouches; a mini-umbrella; and a light jacket. I've been using it as my everyday bag, as you can tell.

since you've used the other version, how were you using it? could it handle some hefty groceries? thanks