All our frames are made with wooden sticks, and a stronger protection than glass to prevent any outbreak and prevent the risks to children. They also have a high UV resistance which will slow sharply yellowing of your works.Our mat (Marie Louise) are made with a cardboard top quality neutral pH.Please note that the images of our products are presented as examples and are not marketedFor more information please go to the page "Contact Us", we will be happy to answer all your questions.Any copy of the site content or images is prohibited exposed to any questions contact the webmaster at