I've bought this mat before and it's the one thing that every home office needs. In time the plastic will start to crack and break but that's probably a good 10 years down the road. Since most people get complacent about vacuuming and cleaning "office" carpets be aware that the mat will leave a distinguishable mark in a couple years depending on the amount of foot traffic.
I’’ve been using this mat on a hard floor (not carpet) for several weeks now. It’s Great!! I’ve tested this with 2 different chairs and it hasn’t slid or moved at all. it’s clear and has a slightly textured on top so it doesn’t glare as much as I thought it would. It’s a great purchase!