Update on Zowie G-SR: It never got flat, tried the iron, the text book, leaving it backrolled in the box, and still nothing, Had to change to my old mouse pad HyperX :
Gaming Mouse Pad | ZOWIE Europe
BenQ ZOWIE G-SR-SE Gris Gaming Mouse Pad for eSport: Amazon.co.uk: Computers & Accessories
ZOWIE Presents DIVINA Special Edition Mouse and Mousepad
GTF-X Large Gaming Mouse Pad for Esports | ZOWIE UK
BenQ ZOWIE G-SR-SE Gris Gaming Mouse Pad for eSport: Amazon.co.uk: Computers & Accessories