2Pcs Aluminum Heatsink Kit 100x60x10mm/ 3.94“x2.36“x0.39“ inch + Thermal Conductive Adhesive Tape Cooler Heat Sink for Cooling SSD Smartphones Routers Hard Drives LED Panel (16 Pins)

So the paste goes inside. The heatsink comes with a heart transfer double sided tape. Here is the link to the exact one: https://a.co/d/03w8HYZx So the heat sink basically takes 90 percent of the top back and nearly matches the battery. The heat sink fits nicely below the stand too.