Pot: 6,5 cm.
It is a globular, light green, tending to olive green, cactus with a concave apex that has a solitary habit, which can occasionally be clustered at the base. It takes the name 'multicostatus', due to the large number of slender, well furrowed and very wavy ribs, equipped with white downy areoles. The radial spines are thin, of an almost translucent white color, while the central ones are larger, longer, rigid, of a reddish-white color, which tend to grow upwards. Flowering occurs in spring-summer at the apex of the plant, generating small, funnel-shaped flowers of a pale pink color with purple central streaks.