I LOVE my Martelli Rotary cutter and their mats. The Cutter is ergonomic and blade has been used for a year (almost daily) and still isn't dull. Their mats NEVER warp and you can bend them and stand on them and they don't break (not that anyone does that, but they don't warp from heat or sun and don't seem to get threads caught it the mat like some other mats.