These mats are not the same ones that came with my original Silhouette, but are the thick media mats for use with the Silhouette SD machine. They work perfectly with my original Silhouette, as I cut lots of thick cardstock. I also like the lines and being able to get things exactly where I want them. I got about 6 months use out of 2 mats with very regular, semi-heavy use. I thought the price was great, especially to buy only twice a year.
First off, I LOVE my Silhouette ... but these mats are way too sticky! The paper sticks to the mat like its affixed with a strong adhesive, ripping and tearing as I try to remove my cut shape.
These are thinner and tackier than the original mat that shipped with my machine - which was awesome. Unfortunately I will be returning these.