The device is an AIRAJ 16-inch Classic Tool Bag. 
This tool bag is designed for durability and functionality, featuring:
Dimensions: 36 x 20 x 25 cm. 
Storage: 5 external pockets and a built-in PE board at the bottom for structure. 
Material: Double-layered, thickened, waterproof, and wear-resistant fabric, often 1680D Oxford cloth.