Primary Material: High-grade Aluminum Alloy (Anodized/Brushed Finish).Secondary Material: Anti-skid Silicone rubber pads (located on the laptop support surface, retaining hooks, and floor base).Compatibility: Fits laptops, notebooks, and tablets ranging from 11 inches to 15.6 inches (can accommodate lightweight 16-inch laptops depending on distribution).Load Capacity: Recommended operational load of 5 kg to 10 kg (11 lbs to 22 lbs).