Fanny packs are also versatile! Each type serves different kinds of purposes that match everyone's needs and demands in a portable carrier! There are fanny packs that come with multipurpose straps and/or water bottle holders. These straps can be adjustable and multifunctional because of their usage. There are also waist packs that are meant for travelling, hunting trips and casual walks. Lastly, there are waist bags that are created for carrying arms.