Robust, spacious and feature-packed, our Doherty 20L Tech Bag is a well-thought-out backpack. Padded fully adjustable shoulder straps raise the bar on comfort. Storage is carefully considered. As well as two exterior zip pockets, an inner one and a padded laptop sleeve, there's bungee webbing on the front for walking poles. Along with a handy grab handle, there's a side compression strap which makes short work of adjusting the bag when it's half empty.