With a 65 litre main compartment and additional 10l on reserve if needed the helvellyn rucksack from technicals is the outdoor explorers ideal bag customisable across the back shoulders waist and hip the helvellyn has a padded mesh upper back support which suspends the load away from the body made from a durable heavy duty nylon and engineered for rugged environments the helvellyn has multiple internal and external storage compartments spacious enough for life on the roadcolour swatchnav