Made out of premium grade 1.8mm natural wool felt, this mat is machine cut - so you can guarantee that the hole is in the middle, it is perfectly round and the edges don't look like someone's been at it with a pair of scissors - like some replacement mats we have seen! Ideal as a replacement for your tired looking old mat, or as a sonic upgrade for most turntables on the market. PLEASE NOTE: This is made from natural wool felt (as supplied with LP12, Rega, Roksan etc) it is NOT made from woven polyester, like DJ slipmats. These do not give the same sound quality. We guarantee that this mat is identical in every respect to the Linn mat, and offer a full money-back guarantee if you are not entirely happy.