Abstract: A collapsible stroller frame adapted to carry variously sized and shaped infant type seats. The frame includes a pair of longitudinal elements having handles at one end and wheels at the other. A strap connects between the longitudinal elements in a rearward portion of the erect frame. A sling element is positioned in a forward portion of the erect frame and is possibly supported by an additional support member connecting between the longitudinal elements. The sling accommodates the front portion of an infant seat and the strap supports the rear portion of the seat. The frame may also include additional strap elements to secure the seat to the frame.