Based on the image, this is a foldable, adjustable laptop stand commonly listed for sale online.
Key Features
Structure: It features a "double triangle" design intended for improved stability.
Adjustability: Many versions of this stand offer multiple height adjustments (often between 6 to 13 levels) to improve ergonomic posture.
Portability: It is designed to be foldable and lightweight for easy transport.
Compatibility: Generally fits laptops and tablets ranging from 8 to 18 inches.
Materials: These stands are typically made from either aluminum alloy or ABS plastic.