As for the space, this bag has a volume of 25 litres. It is made from polyester.
From Viking Direct
Wenger Patriot Travel Bag 17 " 31 x 43 x 41 cm Polyester Black
Conrad Electronic
Wenger Laptop trolley Patriot Suitable for up to: 39,6 cm (15,6) Black
This product is also available at 2 unverified stores.