I really like this mat to protect my hardwood floor in my sewing area. The 45 x 53 is a great size when you have to move around a lot. I liked it so much I purchased a second one! The clear mat does not detract from the beauty of hardwood floors and I'm extremely happy with them.
This product effectively protects my medium pile carpet. It dents easily but springs back at night I’m sure there are stiffer and maybe more adequatr for short pile carpet but this will do for the proce.
This mat is nominated for 3/8" carpet pile. I use it in a workplace organized in a bedroom with the usual soft wall to wall carpet. I measured the pile using a paper clip -- the technique suggested everywhere where the mats are sold. It was difficult to tell exactly because carpet hairs are uneven and bend easily. I eventually decided that they are 3/8" or less so I ordered this mat. Apparently my measurements were off. I got the mat with the cleats shorter than necessary so it tends to drift slowly over the carpet to one side with the rate of about an inch per day. When you buy the mat to use on a home-style carpet (as opposed to a firm office style) choose cleats longer than it would be required per measurement. Otherwise the mat is good and works very well.