Men’s Gucci GG Supreme Messenger bag in black & grey monogrammed coated canvas and leather trim.
The bag features an adjustable strap in navy and red, main zipped compartment which consists of an interior zipped pocket and a front zipped pocket also.
All the hardware is in chrome.
This is a pre owned bag in excellent condition. used handful of times only 
No dust cover .
This Bag is still on sale on  harvey Nichols website for £805
 
The measurements are
Height X Width X Depth
29.5 cm X 27cm X 2.5 cm