The shell of Pleurotomella frigida is relatively small, with a length that varies between 5.2 mm and 11 mm. The shell is characterized by its elongated, fusiformshape and intricate patterns. The coloration of the shell can vary, but it typically features a combination of light and dark hues that provide camouflage against the seabed. The surface of the shell is adorned with fine spiral ridges and grooves, which add to its intricate appearance. The aperture is narrow, and the outer lip is thin and slightly flared.