The "English Man Backpack" is a student sports backpack with the following specifications:

• Size: 28x48cm - This indicates the dimensions of the backpack, making it suitable for carrying various items while being compact and easy to carry.

• Material: Canvas - Canvas is a durable and sturdy fabric, making it a popular choice for backpacks. It can withstand daily wear and tear, making it suitable for students and individuals with an active lifestyle.

• Lining Material: Polyester - Polyester lining enhances the backpack's durability and provides a smooth interior surface. Polyester is known for its strength and resistance to stretching and shrinking.

This backpack is likely designed with a sporty and casual style, making it ideal for students and those who prefer a backpack for various activities. If you have any specific questions or need more information, feel free to ask!