Young Black Haired Girl With With Long Hair And Blue Eyes Shows Off On The Floor On Pillows

'Square' is also called 'continental' in the UK. German pillow sizes are 80 cm x 80 cm (older) or 40 cm x 80 cm (newer). When considered as a subset of Bed Pillow, Euro pillows finish 26 in. x 26 in. and older style Travel Pillows commonly finished 12 in. x 16 in.
The main distinguishing feature is whether the pillow case is plain or with a valance around the edge. In the former case this is described as 'plain style' and in the latter as 'Oxford style'.
"Oxford...has a 5cm-10cm valance round all four sides. With a hemstitched or corded decoration around the inner edge of the valance"