A portable and collapsible cot structure comprises a fabric web, a frame, and a plurality of folding legs pivotally attached to the frame. The cot structure is collapsible to a bundled condition to minimize the amount of space taken up by the structure during storage and transportation. The cot structure includes at least one locking assembly pivotally connected to a leg assembly for maintaining the cot in an open, set-up condition, wherein the locking assembly must be unlocked before the cot structure can be collapsed. The locking assembly includes a first pedal for locking the assembly and a second pedal for unlocking the assembly. Preferably, a downward force can be applied to operate either pedal, thereby facilitating quick and easy set-up and break down of the cot structure without compromising safety, consuming too much time, or requiring undue effort.