This new aluminum alloy case for Raspberry Pi is specially designed for Raspberry Pi 4B to protect your Raspberry Pi from damage, dust, and scratches and keep it cool. It is made of high-quality aluminum alloy, which has the characteristics of high impact resistance, anti-skid, and anti-drop. The combination of the metal case and the plastic bezel keeps the case from being too bulky, and corner bumps won't damage the case. What a perfect product!