A travel pack is a specialized type of rucksack developed for adventurers, and popular with backpackers. Much like ordinary rucksacks in appearance, travel packs have the added benefit of being able to zip shoulder straps, hip belts and shoulder harnesses out of sight. Additionally many travel packs, being internal frame packs have concealed parallel stays designed to offer added support. Travel packs offer a good fit due to their extensive use of straps, webbing and frame. Many travel have additional loops and straps for sleeping bags and other travel items.