... The quality makes an excellent impression (7 layers). The surface has a little more than that of other brands that I know. The mat emits barely a chemical smell. Only to the point of the most important to me "deformability by heat" I can not make any statement after a few weeks. Lt. Manufacturers should we protect the mat but out of direct sunlight and hot objects. Still hope that if they do the sun times should it appear, no waves arise that never go away again - then you can banish the basement for rough work the mats namely. Only the manufacturer stieber.eu advertises that by warming resulting waves can be smoothed by heating again - but it provides at present not ... but it has this (how to read somewhere was) Taiwanese manufacturer to offer the only (and others) a white cutting mat. Only the price is in the comp. Quite high.