Features:
Ultra-thin design, easy to install, fast Heat dissipation
Pure copper , lightweight and durable, long-lasting stainles
All ports and slots of the case can match for Pi 4B
Open case design, you don't need to worry it will effect wifi signal any more

Specifications:
Material: Copper + Acrylic(Black)
Size: As the picture show
For Pi4B

Package includes:
1Pcs Copper heatsink (without fan)
5Pcs Thermal Pads With Different Thicknesses