Bags vary from minute ones, like purses (e.g. as an alternative to putting mini objects in Totebags pockets of clothing) to colossal ones for use in traveling like a suitcase.

Bags are also trumped-up with carrying handles, hanging holes, tape attachments, security features, etc. Some bags have provisions for easy opening and re-closing. Some bags are sealed and can only be opened by destroying the packaging, providing some tamper-evident capability.