Most styles use zipper closures; a few listings combine a snap with a zipper for added security.
Capacity varies by style: one listing specifies it can hold up to 60 pens/pencils, while others describe roomy storage for pens, planners, small tablets, chargers, and similar small essentials.
Carrying details include wristlet straps, vegan-leather finger loops, and compact/slim shapes that fit easily into backpacks, totes, or can be carried by hand.
Some listings specify suggested ages—for example, a few styles list 3 years and up or 6 years and up—indicating those items are aimed at children.
Some listings note special mentions such as a lifetime warranty (registration required), PVC-free construction, and a charitable donation program tied to qualifying purchases.