Highlights:

It seems like you are describing a laptop bag/backpack that is made of polyester and designed for casual use. It is suitable for both men and women and comes with an adjustable strap for added convenience while traveling. Such a bag can be a versatile option for carrying laptops and other essentials in a stylish and functional manner.

Polyester is a popular material choice for bags due to its durability, lightweight nature, and resistance to wrinkles and fading. It is often used in the construction of backpacks and laptop bags because it can withstand daily wear and tear while providing adequate protection for your belongings.