This motorcycle backpack from the Sport-T line by GIVI is perfectly compatible with the side panniers, leg bags and related items which have the same general collection name. Apart from that name, they also share at least one side in semi-rigid plastic. In this case it's the outside.
Technically we can beat you to the punch with terms like '600D PU-polyester coated polyurethane EVA', which in human language mainly comes down to that semi-rigid plastic, with a UV-resistant layer, so we will not do that. Wear-resistant and can take a beating, that's about it.
The T-Sport ST606 offers a capacity equivalent to 22 liters. That is - considering the compact size - pretty good. There’s not a lot of rocket science involved: one zipper with one puller can open and close all around. This gives you immediate access to the most important and largest storage compartment. You can use it as you please, although the (15") laptop does get a place in it and in the half-hard cover you will see three more compartments. Other than that, you do what you want with it. Outside you get two separately zippered storage compartments left and right and even your sunglasses have their own place at the top - fleece lined.
To translate 22 liters into dimensions, we need an engineer, or just a good tape measure: 43 x 27 x 30 centimeters. That is about the same as a saddlebag or a big tankbag. You could even turn the motorcycle backpack T-Sport ST606 into the former.
You don't have to, because the shoulder straps, chest strap and waist belt (they're all there) are adjustable, softly padded where necessary, well finished and fitted with quick-releases. Top quality, so they say.
With a number of reflective elements and an additional rain cover, the T-Sport ST606 is the embodiment of what GIVI describes as 'fast touring': fast, stylish, technical, compact, and yet with a whole range of possibilities.