These backpacks are nylon and  strong.  They come in two styles

Th Dell Essential (15) has the following :
Side and top zip front pocketso, double zip top to main compartment 

2 side pockets

Inside zip pocket
Laptop or tablet pouch

Th Dell Blue Energy has the following

Front large zip pocket and deep side pockets

2 main compartments with the usual internal pouches and the rear to house the laptop or tablet 

Good for everyday use whether its everyday out and about, school or university

H 40 x L 30 x D 15cm