The shell is composed of 10 layers of acrylic panels. This acrylic case is designed specifically for Raspberry Pi 5, not compatible with Raspberry Pi 4B. It provides protection and accessibility for the Raspberry Pi 5. The case has space and is compatible with the Raspberry Pi 5 official heatsink and fan, and matches all interfaces of the Raspberry Pi 5 motherboard. Openings for 40-pin GPIO, PCIe interfaces, and airflow vents on the top, as well as openings for battery connector and UART header on the side, with power on/off button. Easy to insert and remove TF card from the bottom. The Raspberry Pi 5 motherboard and official active cooler are not included. Color: Multicolor. Material: Acrylic. Package contents: 1 x Shell, 1 x screwdriver (screwdriver styles and colors are randomly distributed, no specific request accepted), 4 x non-slip mats. Only the items listed are included; other products are not included. Note: Light reflection and different display settings may cause slight color variations between the image and the actual item. Measurement may vary by +/- 1-3 cm.