There's still plenty of space even with a basketball and shoes inside. I feel like it's around 40L. There's also cushioning on the back, so you can put a laptop in it. One of the zippers on the left and right sides has a cooling sheet, so you can store a 2L bottle. The condition is relatively clean, so I'll sell it to someone who wants it. It has various storage and hooks, so I think it's easy to use. The backpack itself is also quite light. The following is a quote from the description: In addition to multiple small item pockets, it is equipped with a highly breathable shoe compartment. Versatile storage capacity, rational and comfortable The Nike Hoops Elite Pro Basketball Backpack is equipped with multiple small item pockets and a highly breathable shoe compartment. The shoulder straps with Pro Adapt technology make it comfortable to carry to and from the gym. - Brand: Nike - Color: Black - Model: Elite - Design: Striped design - Features: Cushioned straps - Pockets: Side pockets Thank you for viewing.