For the usual cleaning, dust with a soft and dry cloth.
In presence of stains, use a solution of water with natural mild ph 5,5 soap. Apply the foam with a soft cloth, without soaking the leather, blotting the stains from the edge to the centre without rubbing, and wipe suddenly.
It is recommended to make a test in a hidden part of the sofa, to be sure of not damaging more visible parts. Never use solvent, steam, generic stain removers, or shoes cleaning products.
Never expose the furniture to the direct sunlight and place it faraway from any heat source.