Although we use only genuine Epson inks which are guaranteed to last >75 years we do not recommend hanging canvas in constant direct sunlight. Canvas prints are made out of natural ingredients it will respond to changes in humidity & temperature and may become saggy with time. If this happens lightly tap the wedges and that will re-tighten the canvas on the frame. As all our canvas prints are varnished they are water resistant and can be wiped with a soft damp cloth. Please do not use cleaning sprays and any other cleaning fluids. Try to avoid putting to much pressure on the canvas.