Since Howie Cohen's passing, no items are for sale.
The molded plastic seat mounts onto the top-tube of a gents diamond frame. The fold-up foot pegs with stirrups mount onto the down-tube. The child sits in front of the rider and between his/her arms. Probably not the safest design child carrier but the front mounting is preferred by some cyclists. See the picture gallery.
Picture Gallery for this Item (click images to enlarge)