Thirty-six litres divided rather than pooled — the 36L Business Techwear Backpack keeps the laptop, the clothes and the small things in three separate places. Made in nylon, with a strap that slides over a suitcase handle. Good to know How big is it? 36 litres. Which colours can I get? Black and grey. Does it fit on a suitcase? Yes, there is a pass-through strap at the back. More in our techwear backpacks, or browse the rest of our techwear bags.