A single clasp leg pillow having a removably detachable extension. The single clasp leg pillow includes two bolsters, each having an outer surface and an inwardly directed terminal end, the terminal ends opposing one another to form a single leg clasp. A single thigh channel is defined by the two opposing bolsters and the leg clasp. A bridge having a bottom surface extends between the bolsters. The extension pillow includes an outer surface having a top portion arcuate in shape. The extension pillow further includes a sling configured to envelop the bridge to secure to bottom surface of the bridge to the top portion of the extension.