This tiny snail can often be found in very shallow tidepools, where it feeds on filamentous algae. It has a moderately tall spire, with slightly convex whorls. The pattern is somewhat variable, but consists of spiral brown bands of varying width, the lines sometimes broken. The aperture is thin and straight-edged, unbroken by a siphonal canal. This species is difficult to differentiate from other small snails and expert examination can be helpful.
