Whenever you39re cycling in inclement weather you need cycling waterproofs that you can rely on altura have a well established reputation as makers of kit that truly delivers performance in all manner of weather conditions now they bring you the altura night vision rucksack cover ideal for protecting your bag from whatever the elements throw at it this rucksack cover will fits bags approximately 10 30 litres in size and is fully waterproof to prevent your valuables getting wet if you39