Material: Polyester; Laptop compartment: Yes; Feature: Space for large folder; Feature: With zipper; Volume in litres approx.: 20-30. Product Description Freecom Backpack for Notebook 15.4, Black / Grey (31073)… … Again, having test- drived a number of backpacks in local stores, this one is better than average in that regard. But, if you’re going to fill it up, be ready for some serious strain on your shoulders. I have ended up deciding that it’s impossible to get a …