The PARAPROJECT Case TC20 provides secure transportation and storage for up to 20 iPads and other tablets up to 32.8 cm (12.9"). Innovative, built-in TwinCharge modules enable easy charging of all devices through USB-A and USB-C with USB Power Delivery (PD) and QuickCharge. The tablet slots are made of lightweight Con-Pearl plastic honeycomb, providing resistance to deformation. Highlights: - Air vents - Surge protection - Master switch