Spotted this combo on the ferry yesterday and talked to the owner a bit. The upturned bar ends are handholds for his son who is about 2 1/2. With what appears to be a 140 -17 stem that’s a lot of reach for the little dude too. The child seat setup is made by a friend of the owner in Bellingham, WA (tandemtot.com). It’s a pretty slick and slam-friendly setup.