Common shell materials are cotton and cotton canvas; some listings also use plain canvas, nylon, or polyester in part or all of the bag construction.
Reported overall sizes vary widely: heights ~5.9" to 17.3", widths ~6.3" to 16", and depths ~2.8" to 17.3". In practice this covers compact sling styles up to much larger crossbody or briefcase-style bags.
Care varies by listing: common instructions are spot or wipe clean; some items specify machine wash or hand wash; others advise do not iron. At least one listing provides no care instructions.
Extra features include built-in USB charging ports, RFID/anti-theft pockets, wet compartments, waterproof or water-resistant canvas finishes, padded laptop protection, luggage pass-through sleeves, and lockable zippers on travel-oriented designs.
Drink bottles are often kept in elastic side pockets; pens and ID cards fit in built-in pen holders or slot pockets; phones and wallets go in interior wall pockets; and small electronics are protected in padded laptop or tablet sleeves.
