Very highly reviewed - see link at bottom.  
 
Kensington Contour Roller Laptop Case for 17-Inch Notebook, Gray Ballistic Nylon (K62348A)
 
1680 Denier Ballistic nylon protects against abrasions, punctures, and tears
5-stage telescoping handle to adjust to your height
Exterior dimentions: 47cm x 37cm x 23cm. Notebook compartment dimentions: 41cm x 29cm x 4cm. Accommodates most laptop screens up to 17".
SnugFit laptop protection compartment suspends and snugly envelops your laptop
The contour panel is engineered to bring weight closer to the body to reduce shoulder and back fatigue by up to 35%.
 
https://www.amazon.ca/Kensington-Contour-17-Inch-Notebook-Ballistic/dp/B000227PLS