The German Rex is a medium-sized type with slender legs of a tool length. The head is round with well-developed cheeks and large, open ears. The eyes are of medium size in colours related to the layer colour.
The coat is silky and brief with a propensity to crinkle. The hairs additionally curl, though much less highly than in the Cornish Rex. They may be nearly straight.
All colours of layer, consisting of white, are enabled. The body growth is heavier compared to in the Cornish Rex – more like the European Shorthairs.