This is the cover for 30-40L backpack. This material is silicon coated cordura by Invista. Very durable for friction, ripping and worn out with water resistance. Depending on the handle, you can use it as a tote bag for the city use or a stuff bag for the mountain access. Pocketable use. 

100% Nylon
Weight: 100g

Made in China
100 cm x 77 cm