Abstract: I have invented a removably attachable retractable strap device for use with conventional spinal backboards. The present invention essentially comprises a retractable strap device contained in a housing with a curved bottom to be removably attached to traditional spinal backboards for use in securing and transporting patients. The retractable strap is wound around a spring loaded retracting mechanism which is contained within a strap housing with a curved bottom. The strap housing is easily secured to a traditional spinal backboard from underneath the backboard with a spring-loaded clip mechanism so that the backboard rests on the curved bottoms of the housing devices. The spring-loaded clip is engaged by squeezing the squeeze plates, inserting the clip through a handhold or opening in the backboard, and then releasing the squeeze plates. In the preferred embodiment, the strap can be locked into an extended position by a locking mechanism so that a secure fit around the patient may be achieved.