This is a wonderful backpack - my first ever and i have discovered after using it for one trip that i am just not a backpack person. Some people are, and some are not! I sling it over one shoulder and that is just not good. This is the Standard size - 21-liter, 16 ×11'. It stands up by itself which is awesome! Holders on other end for a water bottle and an umbrella! There is a padded laptop sleeve, great organizational pockets inside and out - AND my favorite - a luggage sleeve! please let me know if you have any questions or go to the Portlandgear . com website to see detailed pictures. I am anxious to sell this weatherproof gem! Portland Gear is a BIG name these days - but for some reason it is not listed on Mercari's Brand List.

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