A bundling device includes a molding of a polymeric material. A flexible strap includes multiple teeth each including a notch. The strap is frangible at the notch of any one of the teeth. A strap engagement portion connected to the strap includes first and second flexible wings defining a strap receiving aperture therebetween receiving the flexible strap in a first direction. The flexible wings engage successive ones of the teeth to oppose removal of the strap in an opposite second direction. The first and second flexible wings each include a first arm having a first raised portion extending into the strap receiving portion; and a second arm having a second raised portion axially displaced with respect to the first raised portion and oriented out of plane with respect to the first raised portion.