A new innovation of the Raspberry Pi Accessories! Heatsink and case in one!
This red, anodised aluminium case for the Raspberry Pi 4 will give you 10-15°C of passive cooling under a full CPU load. It comes with a thermal pad to provide thermal contact between the CPU and top case. The case gives you access to all of the ports, pins, and connectors, but be extremely careful not to short any components on the metal top case!