Price: $45. Capacity: 20L. Features: Basic single compartment, small front pocket. Material: Standard polyester. Durability: Good for light use. Warranty: 1 year limited. Best for: Everyday essentials, budget-conscious.

Price: $95. Capacity: 28L. Features: Main compartment, padded laptop sleeve (up to 15"), multiple organizational pockets, ergonomic shoulder straps. Material: Water-resistant ripstop nylon. Durability: Excellent, heavy-duty. Warranty: 5 years comprehensive. Best for: Heavy textbooks, electronics, long-term use.