Boonbuy Bags & backpacks Spreadsheet

Start with the objects, then compare capacity

Write down the largest object the bag needs to hold, such as your laptop with its sleeve or a pair of shoes. External height and width do not guarantee the size of the opening or a padded compartment. Ask for the relevant internal measurement when that is what determines usefulness.

Do not turn three outside dimensions into a precise usable litre figure. Rounded corners, lining and pockets change usable space. REI’s daypack guide treats capacity, features and fit as separate choices, which is a useful way to structure a shortlist without claiming a particular bag will carry a tested load.

Reference: REI: choosing a daypack

Backpack fit and crossbody strap questions

For a backpack, look for the back-panel length, shoulder adjustment and how the bag will sit when carrying your usual items. If a pack has a torso-sizing system, use the maker’s own instructions. An ordinary fashion backpack should not be assigned a hiking-pack fit specification without supporting information.

For a crossbody or shoulder bag, ask whether strap length includes the attachment hardware and whether it is adjustable. For a duffel, check the handles, removable strap and zip opening separately. Save the answer alongside the exact variant so you can distinguish similar-looking listings.

A practical bag photo and packing record

Compare the received colour, visible seams, strap attachment points and closure arrangement with the product page. Ask for a picture of a pocket or opening if that feature determines your choice. A flat image of an empty bag does not establish its carrying comfort or long-term durability.

Before onward shipping, ask how the bag will be packed and whether accessories or a removable strap are included. If preserving its shape matters, discuss packing with the warehouse before accepting a compressed parcel. Use the resulting dimensions for the shipping comparison.