Abstract: A removable, collapsible truck bed cover (100) has a shell (102) of pliable material secured to a frame (200) via sleeves (114) on the underside of the shell (102). The one-piece frame (200) has vertical supports (202) and horizontal supports (206) pivotally attached to each other to attain an erect or locked position and a collapsed position. In the erect position, the horizontal supports (206) form a generally rectangular configuration similar to a plane defined by the top of a truck bed. The vertical supports (20) rest on the truck bed and extend the rectangular configuration of horizontal supports (206) above the top of the truck bed. Corner hinges (208) join two horizontal supports (206) with a vertical support (202). Center hinges (210) join each horizontal support (206) to another horizontal support (206). Thumb locks (234, 334) are employed in the hinges to lock the frame in the erect position.