HP Sprocket 3.5 x 4.25” Zink Sticky-Backed Photo Paper (150 Pack) Comp – Sprocket Printers
Amazon.com: Zink Polaroid 3.5 x 4.25 inch Premium Zink Border Print Photo Paper (10 Sheets) Compatible with Polaroid POP Instant Camera & Polaroid 3x4 Printer : Office Products