This Proviz 30 litre rucksack has been upgraded for 2015/2016. A complete overhaul of the material has taken place to increase strength and durability. The rucksack is now dual layer; The outside material is tough 600D nylon, coated with a PVC lining to give good water-resistance. The inner lining is 210D polyester which adds strength and gives a solid and lightweight, bag designed specifically to withstand the rigours of all outdoor activities. Completed with highly reflective panelling and trim for enhanced visibility.