Editing Double bass (section)

===Transportation===
The double bass's large size and relative fragility make it cumbersome to handle and transport. Most bassists use soft cases, referred to as [[gig bag]]s, to protect the instrument during transport. These range from inexpensive, thin unpadded cases used by students (which only protect against scratches and rain) to thickly padded versions for professional players, which also protect against bumps and impacts. Some bassists carry their bow in a hard bow case; more expensive bass cases have a large pocket for a bow case. Players also may use a small cart and end pin-attached wheels to move the bass. Some higher-priced padded cases have wheels attached to the case. Another option found in higher-priced padded cases are backpack straps, to make it easier to carry the instrument.
[[File:Double bass flight cases, CBSO, 2013-06-23.jpg|thumb|right|upright=0.9|Hard flight cases for double basses]]
Hard flight cases have cushioned interiors and tough exteriors of [[carbon fiber]], [[graphite]], [[fiberglass]], or [[Kevlar]]. The cost of good hard cases–several thousand US dollars–and the high airline fees for shipping them tend to limit their use to touring professionals.