There is nothing worse than trekking somewhere in bad weather and then finding out that all the contents of your rucksack are wet that is why this lightweight yet durable 40 litre trekmates quadfold rucksack liner which has taped seams is made from durable ripstop and has a roll top closure is an essential for keeping your belongings dry whether you are using your daysack for commuting or enjoying an exhilarating day hike in the great outdoors with a capacity of up to 40 litres and with an oval