I looked at mine. I'm thinking they are glued in areas. I like the idea of heated seats and the option to remove sounds good to me.
Received my heated seat pads today. They actually look much better in person. Something like the ribbed seats in the older mustangs. The picture was taken in the dark while parked in the garage and has a lot of light reflection. I wouldn't leave them installed all the time but they aren't unsightly either. I tried them out (static, not on a ride), cozy! Inexpensive and I'm sure these will be a great addition for longer rides in chilly morning air! Easy on & off, 10 second install/removal. As ConnMan said, If you use the cigarette outlet between the seats remember to unplug as it's a "hot" outlet.