Is the backing flexible rubber? Is it machine washable?
The underside is made of water-resistant peva vinyl material. Surface wash with warm water and mild soap by hand only.
I bought this blanket specifically for going to movies in the park this fall and then again for next summer and fall-- after our cold Indiana winters. This blanket is perfect for my me, my boyfriend, and our Boston Terrier, Lincoln... plus our picnic bag. What makes this blanket better than others we have used is that it fits all of us comfortably and it's water resistant and so if it rained recently, we are still dry when we watch Halloween movies outside with our neighbors. The St. Topaz stripes are pretty!