All top-loading One Planet packs with an Exact Fit harness have a ‘floating’ lid, allowing the rucksack’s capacity to be increased by up to ten litres. Simply loosen the three webbing straps at the rear of the lid and pull it upwards and voila: your pack is bigger!

The maximum pack space can then be used by extending into the internal throat of the pack. However, this expansion is intended for extreme circumstances only as the weatherproofing of the pack is somewhat compromised when the lid is raised.