A perfect backpack for your hike! The material of choice for this bag is nylon and it holds 11 litres.
From Amazon
Osprey Talon 11 Men's Hiking Pack Limon Green - L/XL
The product is available from £77.80 at international stores.
Trekkinn
Osprey Talon 11l Backpack Green,Yellow L-XL
Hardloop
Osprey Talon 11 - Hiking backpack - Men's Limon Green L/XL