Gianfranco Ferre Tribeca_4 Cushion in Lather
Overall dimensions: 500 mm x 500 mm x 210 mm
The base of the pillow is made of leather.
Leather side tape
Leather trim.

https://www.1stdibs.com/furniture/more-furniture-collectibles/textiles/pillows-throws/gianfranco-ferre-tribeca-4-cushion-leather/id-f_16961542/ 
https://gianfrancoferrehome.it/en/collections/accessories-collection/cushions/n5