1. Material: aluminum sheet metal + silica gel 2. Two-stage triangular structure, stable support 3. The bottom is fully hollowed out to speed up the heat dissipation efficiency 4. Compatible with 11-17.4 inch tablets, laptops, hand-painted boards 5. Non-slip silicone, stable and not shifting 6. Net weight: 420g 7. Size: 233x260x87mm