The Ultima 22 Backpack boasts sought-after storage and still manages to pack down to the size of a soda can. When expanded, it can be carried in two configurations: compact for all-day convenience or a more robust mode that takes advantage of the full capacity by expanding and adding the clip-on fanny pack. The tough ripstop build is waterproof on its own and reinforced with YKK watertight zippers. But most notably, it comes with a removable, inflatable back support that doubles as a padded seat, so you can rest your bones no matter how rocky the terrain gets..View Ultima 22 Backpack with Hip Pack by Travoost on our site for more info. - The Bespoke Post store has the greatest gear from the world's best small brands. Free exchanges, easy returns and no commitments.